What is a good and funny Marvel comic?
Second Superior Foes.
Is Legacy funny (or supposed to be)? I'm currently on the second TPB and it doesn't particularly seem that way. It seems very tied in with the "oppressed mutants" themes, rather than showing the lighthearted side of the X-men universe such as Wolverine/Spider-man and the X-men. Still a fantastic book.
As to OP's question, I would agree with Superior Foes and Spider-man and the X-men, and also add Kelly's Deadpool.
hoaward the duck
it definitely has an overall serious tone, but there's alot of comedy in the scenes with the different personalities, and personally I find Legion's personality in general humorous