Nektar Geist
An Onion Among Onions

Early role as "Fascist Cop" in Magnum Force (sequel to Dirty Harry)
Now, some of you Shermans might not know this...

He ended up doing the recorded stage version of "Jerry Springer: The Opera", after taking over from the bloke from Dempsey and Makepeace in the theatre/arts centre.
THere's an ep of Cannon, where Dave does a comedy-bad Kraut accent.
Couple more things:

With James "Yes, that James Mason" Mason in Tobe Hooper's Salem's Lot.
Most of you will know that David Soul was also a singer. Not many people know, that's how he started...
RIP David Soul.