Ace Ventura (1994)

 Ace Ventura (Jim Carrey) is a highly impulsive "PET" Detective. He has this unconditional love for animals,he's flamboyant,eccentric, but still is a fantastic detective with a great attention to detail.His next big case requires him to find a dolphin who is the mascot for a football team. Ace is bloody fantastic in the mental hospital scene,worth watching 3 times. Lt. Lois Einhorn(Sean Young) is his arch enemy in the police force,their regular activity of taking shots at each other is hilarious.
 A must watch movie for those who haven't seen this yet. Jim Carrey at his usual best.

 

Yes Man (2008)

Carl ( Jim Carrey) is a pessimistic, unhelpful, and a huge procrastinator.He's stuck at his boring bank job since ages, when he comes across an old friend who introduces him to a new way of life. The power of Yes. He fixates on the idea that saying yes always gets you good things, saying no makes it worse. Since its a Jim Carrey movie,u don't have to guess that its going to be a hilarious movie.Average Story but good for a few laughs. Watch out for Jim Carrey on a ducati with his butt popping out.