You can't beat Dogma's great writing.

Even though I love Dogma, Clerks II had the funniest when Randal was making fun of lord of the rings.

jay and silent bob is the best movie ever

Dogmas' first 20 minutes were funny, plus all the Alan Rickman scenes, but the rest I didn't really like. And no I am not one of the crazies who thinks it's blasphemous, I liked it, it just wasn't that funny.
Anyway Jay and Silent Bob Strike Back was the best, it was just... Well the only word I can find to describe it is awesome.

Someone needs to add pics to these choices ;) Dogma ruled.

well it's best jay & bob movie hence my choice

I think Chasing Amy had the most developed characters.

In Mallrats they are just off the wall & down right funny

You see, I don't consider Clerks a Jay and Silent Bob movie, because they have really minor roles.
Same thing with Chasing Amy and Clerks II.
They have a somewhat larger role in Mallrats, but still, not enough to be considered a "Jay and Silent Bob" movie.

So, basically, the only Jay and Silent Bob movies are Jay and Silent Bob Strike Back and Dogma.
Out of these two, I like JSBSB a little more.