Just because of it’s pure fraking unmitigated awesomeness! Yes, you must watch Hot Tub Time Machine damn near daily:
Jacob: This is scientifically possible!
Nick: Tell us how it’s scientifically possible, Professor Hawking.
Jacob: I will, ’cause I write Stargate fan fiction; this is my bread and butter, man!
Nick: Oh my God, I seriously almost passed out you’re such a dork.
Jacob: Do I really gotta be the asshole who says we got in this thing and went back in time?