A guy challenges himself to say "yes" to everything for an entire year.

Allison: The world's a playground. You know that when you are a kid, but somewhere along the way everyone forgets it.
Allison: [riding on a motor scooter] Am I going too fast for you?
Carl Allen: Nah. In fact, I think you should go faster. That way if we crash, at least I'll die. I just don't wanna be kept alive artificially.
Allison: Are you stalking me?
Carl Allen: No, I would never do that. Oh, by the way, the new furniture looks great from the yard.
Allison: [singing with her band] Don't call me past 11 PM, it won't happen again. You can call me at 10:59 but don't call me at 11 because that's my rule now.
Multack: We knew another Carl that we weren't fond of, now did we, Tweed...?
Tweed: ...His name was "Marx."
Carl Allen: What I have to share is huge... and I want to share it with you.
[last lines]
Terrence Bundley: YES! Say it a million times. Then say it a million more. And the word you will have said two million times is...
[looks around and sees everyone at the seminar is naked]
Terrence Bundley: Oh, my God.
Yes People: [while covering themselves up as best they can] YES!
Carl Allen: I am gone-o-reha. That didn't sound right.
Allison: Have you met my friend Ian? He's a computer hacker. He helped me erase your MySpace page, and your band's MySpace page, and your FaceBook page. Happy networking, asshole!
Carl Allen: [while watching Saw on DVD] Oh come on, you're halfway through, just snap it off already!
Carl Allen: Was I chewing gum before?
Carl Allen: You ever had a Red Bull? Ive never had a Red Bull before, but I had a Red Bull last night - I really like Red Bull.
[shakes his glow-in-the-dark hoop]
Carl Allen: ... got this new... glow in the dark thing... cant really see it right now, unless you go like this...
[holds part of the hoop to his eyes and covers it with his hands]
Carl Allen: I can't believe I tripped like that.
[first lines]
Carl Allen: [refusing incoming cell phone call] No.
Carl Allen: [refusing another incoming call] No means no.
Terrence Bundley: You can't audit life, my friend.
Carl Allen: [drunk] Hey... I'm just saying 'yes' to life... 'cause... you gotta say 'yes' to life... I'm in a secret covenant... That sounded naughty!
Tour Guide: We've got a fainter down in head-removal.
Allison: [singing with her band] Don't call me past 11pm, it won't happen again. Happened once, it happened twice, it happened three times, maybe four times, maybe five times, maybe, maybe it happened six times, but it won't happen seven times.
Norman: You called me Norm!
Carl Allen: Yeah.
Norman: Could that like be my nickname?
Carl Allen: Yeah, I guess.
Norman: Ah nice, I like your style, Car. That could be yours.
Carl Allen: Yeah, Carl's pretty short already but...
Allison: [singing on stage] I shoulda been the one to break up with you. / He said who are you, who are you? / I wanna snap your neck and spit on you. / He said who are you, who are you?
Nick: [listing things he's done since he started saying "yes"] I killed a cow with a bazooka... I'm not proud of that last one.
Carl Allen: [incredibly drunk, after losing a bar brawl, said very sadly] She's never gonna go to a ball.
Wes: [after telling Carl he's been promoted for making money by giving out so many loans] Nice work, Carl. Now bump my fist.
[Carl bumps fists with Wes]
Norman: [Norman leans forward to join in and bump Wes' fist, but Wes sits back down, ignoring Norman] Ah, I missed it. I was going to fist you.
Carl Allen: Yes!
Nick: Psh, fine! I wipe my ass with fine!
Carl Allen: ...Wow. Um. Ok?
Tweed: Can you explain why you were at the airport buying a ticket with no luggage?
Carl Allen: You know it was a spur-of-the-moment trip.
Tweed: Yeah I was just explaining to my partner here how much I've always wanted to see Lincoln, Nebraska.
Carl Allen: Steph...! I can't... I'm so sorry.
Stephanie: What are you saying?
Carl Allen: ...I'm saying "no."
Carl Allen: [talking to himself, walking back to town] Why don't you take a late night stroll through the hills and get killed by the Manson family? Don't mind if I do!
Carl Allen: Hey, Carl... you wanna give your money away to some homeless guy? Yes, yes I do. How 'bout letting him use up the phone battery so that you can't get help when your car runs out of gas? You know what? That sounds like a fuckin' great idea!
Carl Allen: The era of "yes" has begun.
Norman: We! Are! Sparta!