All of them. Super Paper Mario was the most laugh out loud funny for me, and wins the award for best word puns (i.e. The river Twygz instead of Styx, the Sammer Guy Crow-Who-Eats being forced to eat crow, etc.). PM&TTYD I didn't play till recently, but it has the best gameplay & characters in my opinion. I loved Goombella, Vivian and the Yoshi especially. The only dull part of it for me was the train & Poshley Heights. Every other chapter was humorous and really clever. The original Paper Mario was tons of fun and had some super memorable bosses (like General Guy or the Koopa blocking the road), but PM&TTYD was an improvement over it in nearly every way in my opinion. Paper Mario's main issue was your partners not having HP. PM&TTYD fixed that and made battles way more awesome with stylish moves, an audience, and a more amusing ambiance. Every battle felt like a part of a performance. It was also funny when bosses screwed with the audience or scenery fell over.