I've seen a lot of terrible movies, but A*P*E (1976) takes the cake. Apparently made on a budget of literally just thousands of dollars, A*P*E omits the traditional second and third acts of a normal movie and gets straight to the climax, which is of course the typical military-versus-giant-beast showdown. Setting (and shooting) the action in Korea adds a tiny bit of interest, as does the 3D format, but the performances, direction, editing and effects are so slipshod that it's hard to believe this thing ever got released. Still, it's worth a few laughs, and the in-your-face 3D gimmicks make for some cheesy fun.
I watched A*P*E on Kino-Lorber's new Blu-Ray disc. The folks at the 3D film archive have done their usual bang-up job of restoring the image (for what it's worth), and the included commentary by Chris Alexander is informative and funny as hell. I don't know that I'd recommend this as a buy even for my bad-movie-loving friends, but it's worth at least one watch.