Ooooh, I remember Monster Bash, that was great
Incidentally, it wouldn't qualify as a request as such, since Apogee titles can't be hosted - they're ESA and many of them are still for sale on 3D Realms' site IIRC.
EDIT: Yup, here it is:
http://www.3drealms.com/bash/index.html
The buy it link's in the top right of the screen (10 USD either on floppies or to download), or the shareware episode's there.