Hi! A Thai guy here. I haven't watched many of the lakorns everyone mentioned because I watch Korean dramas more, but I'll suggest the hidden gems that Thai people like very much and others don't really know of!
ผู้กองยอดรัก Phu Khong Yod Rak / Poo Kong Yod Rak --
this is a romantic comedy that has been remade many times.
The latest version from 2015 should have subtitles, I think. It's really good!!!!
http://mydramalist.com/19454-phu-khong-yod-rak (2001) -- most beautiful lead actress
http://mydramalist.com/15760-phu-khong-yod-rak (2015) -- funniest male lead
http://mydramalist.com/19452-poo-kong-yod-rak (2006) -- don't remember this one lol
นาคี Narkee --
at least it was SUPER POPULAR in Thailand last year.
It's set in modern time but it has historical elements because lead lady
has a lot in connection with a goddess from the past.
If you like Ken Phupoom then watch it!
It started airing before the late King Bhumibhol of Thailand passed away last year
so the airing of all dramas was stopped, but after a while they started airing again
and this one was the only drama that started airing from the first episode
because people requested it so much.
http://mydramalist.com/18908-narkeeตามรักคืนใจ Tarm Ruk Keun Jai --
This one has Nadech in it. It's set in beautiful Northern region of Thailand.
He has a lot of action scenes in here but it's not completely an action drama.
The sweetheart of viewers was Naram (Au Tanakorn) who is probably
more charismatic and handsome than Nadech LOL!
http://mydramalist.com/11436-tarm-ruk-keun-jaiดาวเกี้ยวเดือน Dao Kiao Duen --
The leads are hot and the male lead's younger sister is also hot
and she's also a very lovable character. She rocks actually!
Really good lakorn and Janie was so pretty in here.
You just gotta watch it. Don't mind her annoyingly overprotective older bro.
http://mydramalist.com/9956-dao-kiao-duenดาวเคียงเดือน Dao Kiang Duen --
This is the spinoff of that previous one above.
I haven't seen this one but the reaction in Thailand was really good as well.
Some says that this story is better than it's parent story.
I don't know. I should watch it soon.
http://mydramalist.com/10731-dao-kiang-duenแรงเงา Raeng Ngao --
I seem to keep recommending Ken Phupoom's drama LOL
He's not even my favorite but he picks all the good dramas.
This one has Janie too. She plays two roles and her performance was EXTRAORDINARY!
If you like strong female lead with some good slap skills, this is it.
She's smart, strong, beautiful, but I don't remember Ken's character.
http://mydramalist.com/10002-raeng-ngao
There's also second season coming soon
http://mydramalist.com/24007-raeng-ngao-2The Rising Sun Series --
รอยรักหักเหลี่ยมตะวัน Roy Ruk Hak Liam Tawan (watch this first)
http://mydramalist.com/10503-roy-ruk-hak-liam-tawa...รอยฝันตะวันเดือด Roy Fun Tawan Duerd
http://mydramalist.com/10344-roy-fun-tawan-duerdThe series is set in Japan and features some samurai actions (LOL)
and they have the best leads, Nadech & Yaya, Mario & Taew!
There's also Golf Pichaya (Mike D'Angelo's brother)
and the hot Au Tanatorn from my third recommendation above.
If you don't mind some weird logic like how they speak Thai in this "Japanese" drama
then watch it. It's good and beautiful to look at.
หยกลายเมฆ Yok Lai Mek (Cloud Jade) --
This one is old and it was really famous in Thailand.
This is also a revenge story where the romance is a bit weak (but there is a main couple)
The comments on this page doesn't look good. Why?
I remember liking this one a lot. Janie is in here again.
A lot of shooting was done in Hong Kong.
They have good villain(s) in here. Amazing acting by everyone but main guy LOL.
http://mydramalist.com/10286-yok-lai-mek
(insert epic music)
คู่กรรม Koo Gum --
THIS IS HUGE. THIS IS A MUST WATCH.
This was based on a bestselling novel from looooong ago
and the drama has been produced multiple times.
I think the latest version should have subtitles and it was a good remake too.
This is story about Japanese soldier and Thai woman during World War II.
It's a tragic love story with war background with amazing soundtrack.
Choose the version you like:
http://mydramalist.com/10316-koo-gum-2013 (drama 2013) RECOMMEND!
http://mydramalist.com/10098-koo-gum-movie-2013 (movie 2013 with Nadech) REC!
http://mydramalist.com/10405-koo-gum-2004 (drama 2003 or 2004 - most popular in Thailand) REC!
http://mydramalist.com/10406-koo-gum (too old I wasn't born yet LOL)
http://mydramalist.com/15361-koo-gum (even older but I wanna watch this, it has Warut Woratam as lead - he's good!!!)
http://mydramalist.com/20644-sunset-at-chaophraya (also old movie that I haven't seen)
(THE song
https://www.youtube.com/watch?v=pR4IdyCmglE)
คิวบิก Cubic --
I hate to recommend this one because I hated how this one
was a BIG disgrace to its original novel.
Still, check it out. Read my comment on that drama page.
The base story is actually VERY well planned out.
Very good action featuring strong female lead.
http://mydramalist.com/9938-cubicสุภาพบุรุษจุฑาเทพ The Gentlemen of Jutathep Series --
This was popular for featuring up-and-coming male leads.
I suggest girls to watch this for the guys,
but I'm a guy and I'm not very fond of any of these lead girls.
Story could be typical but the production was huge so give it a try.
1.
http://mydramalist.com/10020-khun-chai-taratorn2.
http://mydramalist.com/10024-khun-chai-pawornruj3.
http://mydramalist.com/10062-khun-chai-puttipat4.
http://mydramalist.com/10065-khun-chai-rachanon5.
http://mydramalist.com/10088-khun-chai-ronapeeI recommend part 5 because both leads are good.
Many people suggested these and I agree:
http://mydramalist.com/16323-padiwaraddahttp://mydramalist.com/13865-kleun-cheewit
http://mydramalist.com/13397-leh-ratreeRight now this one is airing and it's good (quite K-drama like)
http://mydramalist.com/20580-game-mayaI personally don't watch teen-targeted series like Hormones and Ugly Duckling etc.
Hope you enjoy those dramas. Hope they have subtitles!!!!
EDIT: also add this
ทวิภพ Tawipob --
It's historical and has time travel.
It's not sci-fi like other time travel dramas.
It's a good piece of romance and drama and historical.
Beautiful costumes and historical scenes.
http://mydramalist.com/9841-tawipob-2011