I usually speedrun I Wanna Kill The Guy and I plan on speedrunning Undertale TPE.

The games that I currently speedrun (I haven't recorded or uploaded any, though) are:
Super Mario 64
Super Mario Sunshine
Super Mario Galaxy (1 and 2)
Xenoblade Chronicles
Sonic Generations
Sonic 06
Luigi's Mansion
Megaman Zero 4
Megaman X
Super Mario Bros (1, 2, and 3)
Super Mario World
Sonic Unleashed

I waxed philosophical in the "Underrated Speedgames Thread," so I'll spare you guys here. But there's this nifty game bundle on Steam that includes four clever puzzle-platformers:

BEEP
Camera Obscura
Out There Somewhere
Polarity

I currently run Out There Somewhere and have started learning Polarity. Eventually I'd like to have a submitted run of all four of these. If I ever get a capture device, I have my eye on some Nintendo 64 and GameCube games as well.

I only have one game I'm running for now, Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness 3, but I'd like to add at least another game or two to the list sometime.

Resident Evil 1
Resident Evil 2
Resident Evil 3
Resident Evil REmastered
Resident Evil Code Veronica X
Resident Evil Outbreak File 1 and File 2
Resident Evil Deadly Silence
Silent Hill 2
Silent Hill 3
Final Fantasy VIII
Haunting Ground

Gameboy games! (Trax mainly)

Resident Evil 2
Resident Evil 3
Resident Evil Code: Veronica
Demon's Crest

Literally just Antichamber for now.

It's tons of fun though, but a little break is needed every once in a while because of how short it is.

Frogger the great quest