It's difficult to know what is less known these days as film recommendation posts happen a lot.
If you told us what you liked we could probably come up with recommendations that let you drill down a bit further.
However:
SF:
- Timecrimes (2007) - if you like Primer or Triangle
- About Time - makes me cry every time
Comedy - I'm rather partial to a kung-fu comedy:
- Close Encounters of the Spooky Kind
- Mr Vampire
- Kung-fu Hustle