[seconds Foodie's quoting of the entire series]
Off the top of my head, some of my favorites:
Boober: "Time to get back into old Mr. Beddy-Bye!"
Red: "Right after I introduce you to Mr. Fisty Wist." (#65, Playing Till it Hurts)
Boober: (hysterically) "The rock is cracked!"
Gobo: "The rock and...