Just played straight through House of the Dead Overkill, making this the second time I've played this game since it came out. I had forgotten just how fucking absurd that final cutscene is, in a kind of No More Heroes true ending kind of way. Laughing my ass off in complete disbelief.
It's still not the the best House of the Dead, stuff like the screen recoil and some of the enemy behavior holds it back. Framerate too, but while I hate to plug the "cinematic" side of that argument, it kinda unintentionally fits with the shitty image quality of a grind house film. Still a hell of a lot of fun, and that aesthetic really makes that game.
HOTD 2 > 4 > Overkill > 1 > 3