Khun Chai Tharathorn - This was one of my earliest lakorns. If you haven't heard, it is first one of the The Gentleman series
Mae Ka Khanom Wan (Dessert girl). I like this one better as the female lead is not stupid and can fight.
Taddao Bussaya and Dok Ruk Rim Tang: I started but somehow got bored and couldn't finish. May be that day/time was not suitable for such genre :)
Tawan Yor Saeng - I've seen a couple comments (in Google searches) that this is a gender-bender, but none of the synopsis' I've found for it have mentioned
that at all. If anyone knows for sure, please let me know!