Can someone tell me whats a really funny movie?

ive seen alot of the funny movies already. im not sure what ive missed. i like movies : the hangover, due date, hall pass,. etc. if u list one ive prob allready seen it. list as many u can think of. also i like stoner comedies too. like friday , harold kumar, cheech and chong. or something like hot tub time machine list anything thats funny.