Just wanted to pass on that the review of Shoot the Bullet (or any Touhou game) was a nice and welcome addition to the site. Even though I tend to prefer ZUN's more manic stuff (Imperishable Night, etc), Shoot the Bullet was definitely an interesting change of pace. Weirded me out the first time I tried it, when I hit the button to start firing and suddenly heard, "click!" instead.
You mentioned Giga Wing in the review, but are there any other decent shmups you can think of that use similarly off-beat or unconventional systems?