I was going to recommend 1 Litre of Tears (one of my favorite dramas) and Doctor Stranger from your TWL, but then I saw you were also looking for something light and funny, and neither of them are (well Doctor Stranger is actually quite funny at times). But I still recommend both highly.
When it comes to something light and funny maybe you could try Tokyo Bandwagon? I don't really watch that many light dramas but I would say this is one the lighter side. Kimi ni Todoke is also a light and fun movie to watch, but I does contain bullying if I remember right.
Edit: Maybe Hana Kimi? It's light, funny and romantic.