While this would just be something people do on the forums, I thought it would be cool to TAS the mini games that don't get played in the actual runs. I'm now just putting new runs in the top post here, so keep an eye out for more.
Pekopon
Goomba Thumping (not for high score, but just to look cool)
http://dehacked.2y.net/microstorage.php/info/587372198/Goomba%20Thumping.smv
Snes9x v1.43+ v9
Super Mario RPG - Legend of the Seven Stars (U) [!]
WIP1 timing
Diglett Stage
http://dehacked.2y.net/microstorage.php/info/1629100331/good%20digPokemon%20Pinball%20%28U%29%20%5BC%5D%5B%21%5D.vbm
Rom:Pokemon Pinball (U) [C][!]
Emulator used: VBA re-recording 19.3
No Bios
Gameboy Colour
Start recording on the frame before the little bar at the bottom pops up in the stage. You gain control on the next frame. End recording at last input.
Egg Catch
http://dehacked.2y.net/microstorage.php/info/1539638880/egg%20Kirby%27s%20Adventure%20%28U%29%20%28PRG0%29%20%5B%21%5D.fcm
Rom: Kirby's Adventure (U) (PRG0) [!].nes
Emulator Used: FCEU 0.98.16
Pikachu's Beach (improvement) (aim for high score)
http://dehacked.2y.net/microstorage.php/info/1521304500/pikachu%27s%20beach%20improvePokemon%20-%20Yellow%20Version%20%28UE%29%20%5BC%5D%5B%21%5D.vbm
Rom: Pokemon - Yellow Version (UE) [C][!].gbc
Emulator used: VBA re-recording 19.3
No Bios
Game Boy Colour
Kirby's Air Grind (Since the course length is random, not much to do about top time)
http://dehacked.2y.net/microstorage.php/info/641375233/Air%20Grind%20Kirby%20-%20Nightmare%20in%20Dreamland%20%28U%29%20%5B%21%5D.vbm
Rom:Kirby - Nightmare in Dreamland (U) [!].gba
Emulator used: VBA re-recording 19.3
Emulator's Bios
Game Boy Advance
Bomb Rally (Kirby Nightmare in Dream Land)
This sort of varies from the standard TAS since I tried to make the rally last as long as possible rather than end it quickly. It's much cooler that way.
http://www.youtube.com/watch?v=-1q2gbgL_iI
Taz Stage (technically not a mini-game, but pretty much is one.)
This is how Taz Stage would look in my Looney Tunes Run if speed wasn't an issue.
http://dehacked.2y.net/microstorage.php/info/291613957/Copy%20%282%29%20of%20tazLooney%20Tunes%20%23%20GB.vbm
Rom: Looney Tunes #GB (also works with the (U) [!] version. accidentally used other version for this clip)
Emulator used: VBA re-recording 19.3
No Bios
Game Boy
Chuckola Bounce (Mario & Luigi Superstar Saga)
http://www.youtube.com/watch?v=87238WnYZjI
Games I'd like to see
Koume's Target Practice (Majora's Mask)
Bumber Crop Bump: Intense (Kirby 64 The Crystal Shards)
Aglar
Panic Restaurant's Fishing Game.
http://dehacked.2y.net/microstorage.php/info/141216830/Panic%20Restaurant%20%28U%29ctf.fcm
girfanatic501
Game & Watch Gallery: Manhole
http://tasvideos.org/1907S.html
AKA
Magikarp Splash
http://uk.youtube.com/watch?v=-r64liSaQyM
YtterbiJum
Kirby's Adventure: Boss Battles
(Youtube)
http://www.youtube.com/watch?v=5h9bcX7DFyA
(FMC)
http://dehacked.2y.net/microstorage.php/info/538879595/kirby_vs_boss_ybj.fcm
mz
Final Fantasy VII - 7261 points in Speed Square
http://www.youtube.com/watch?v=lIxhGgs00J8
adzicents
All Pokemon Stadium Mini-Games
http://www.youtube.com/watch?v=hGT3xHyDmqc