Not really lesser known but thought I'd offer up some suggestions anyway....
Dellamorte Dellamore (aka Cemetery Man)
Night of the Creeps
Undead

You're post made me think of a movie I saw quite a while back and forgot the name. This is probably from the early 80's. A guy (possibly Cliff De Young but not for sure) traveling with a kid (maybe his little brother) in his muscle car. Drives into a small town where something is amiss. I remember the man being trapped in a school bathroom by a horde of zombie-types. He climbs on top of the stall dividers trying to escape thru the ceiling.... what is this?

I'm also enjoying Max Brooks' World War Z novel a great deal. My wife got me the first The Walking Dead graphic novel for Christmas but I have only read the first chapter.