Why battle the crowds and prix fixe prices on Valentine's Day when you can stay home and watch Liz Lemon battle Dennis Duffy, Matt Damon, Jon Hamm, anesthesia, and IKEA? 30 Rock
Season 1 Episode 13: Happy Valentimes! Tracy and Angie role-play, Liz meets Flower Guy, and the TGS staff plays a few rounds of Marry, Boff, Kill.
Season 3 Episode 11: Jon Hamm! Other stuff happens, too.
Season 4 Episode 13: Liz has oral surgery, attempts a Jamaican accent, and tries to make out with what she thinks is Bon Jovi. Don Cheadle on a bed of rice!
Season 5 Episode 14: In which we learn that Matt Damon is the male Liz Lemon.
Season 6 Episode 6: The infamous IKEA episode! A must-watch before a couple's trip to IKEA. Also, Jack discusses "Jeter's legs in those pants".
All on Netflix Streaming
Season 1 Episode 12: Michael gives a Valentine's Day toast which causes his family to act-out even more than usual.
Season 2 Episode 10: I find the Bullet character exhausting in this one, but Tobias' double entendres are priceless.
Both on Hulu
Season 1 Episode 15: The perils of the naked-under-the-trenchcoat move.
Season 2 Episode 14: Gloria wins Valentine's Day!
Parks and Recreation
Season 2 Episode 13: Will Arnett as a creepy MRI technician!
Season 4 Episode 14: Chris DJs, Ann finally uses her car-charger curling iron.
Both on Netflix
Any other favorites? I'm sure I'm forgetting tons of them!