No problem!
Ok, actually, my second favorite after One Piece is Attack on Titan. I can't say there's comedy, dark humors, yes, but not much like One Piece, lol. It's pretty tragic.
Then there's also Fairy Tail, which came almost as close to One Piece. I think it's funny and the characters are cool too.
There's also Beelzebub, another shounen, action, with comedy.
I personally like Ao no Exorcist but there's not much comedy. And you've probably heard of Naruto? It has its moments.
Honestly, I can't find anything as masterpiece as One Piece, I'm sorry
Though, if I remember something else, I'll definitely let you know!