I've been meaning to post something here for a while... here we go.
All games were 1CCed on their default settings unless otherwise listed.
NES:
Dragon Spirit (The arcade game is sadistic, but the NES version is easy. Go figure.)
Crisis Force (Wow, this game is awesome! Dunno why it's Egyptian themed, but ... still, damn!)
Gun-Nac (As usual for Compile, it's fast, intense, and fun; yet it's easy as hell due to excess 1-ups.)
Lifeforce (I always thought it was two words, but the title screen clearly makes it just one. At any rate, one of the finest games for the NES.)
Arcade:
Dodonpachi (My first Cave 1CC!)
Mushihme-sama (on ordinary and maniac... ultra? Umm, no.
)
Giga Wing
Gradius
Batsugun SE
PC (only games that matter listed):
Embodiment of Scarlet Devil (Tohou Koumakyou)
Perfect Cherry Blossom (Touhou Youyoumu)
Imperishable Night (Touhou Eiyashou - Some say PCB is harder than this one, but IN takes the difficulty cake if you ask me.)
GUNDEADGLINE (waaaay easier than the first one)
Kamui (full version - great game but your bullet-eating laser makes it soooo easy)
Excess Fraction (full version)
Cho Ren Sha 68K
Gekka Ibunroku: Tsukihime no Shiro (1CCed both story mode and special mode - if you haven't heard of this, it's a pretty neat Shikigami clone with Tsukihime characters)
Genesis/Mega Drive:
M.U.S.H.A.
Elemental Master (Yay Technosoft! Yay verts that have interactive stage elements!)
Divine Sealing (awful, awful game, avoid)
Game Boy (and Color, and Advance):
Gradius (Got to stage 14... loop 3, level something or other)
Phalanx
MSX 1/2:
Aleste
PC Engine (and CD, and Turbo Grafix 16/Duo):
Spriggan
Air Zonk
Air Zonk CD (great games both, but a little easy due to excess 1ups)
Heavy Unit (gets my award for "most unbalanced shmup ever")
Psychic Storm
Powergate (easy, and definitely not a great game, but fun for some reason)
Playstation 1:
Zanac Neo
Zanac Arrange Version (not much different from the unarranged version
)
Playstation 2:
Shienryu Explosion
Saturn:
Steam Hearts
Salamander 2
Jikkyou Oshaberi Parodius (aka Chatting Parodius ... need to get good at more Parodius games)
PSP:
Sengoku Cannon
Star Soldier
Total: 37
Non-shmups
Jackal - NES (Hey, it's -almost- a shmup... and incidentally, one of my fave games ever.)
Contra - NES (Hurrah, finally 1CCed it without the 30 lives code
)
Super Contra / Super C - NES (1CCd and 1 lifed. And I once thought this game was hard.)
Toki - NES (looks terrible, but plays really well)