I enjoy most Can albums. I guess the best starting point would be to get the 2CD set which has tracks from every album. I also have this 2DVD Can thing that is Awesome!
The other one came out 1 year before "Do you Wanna Dance" in 1979 on the same label. The label is the Black Label & the record has the songs "No more Grease" and "Bob the Idiot".
I ran into Greg "The Hammer" Valentine on Sunday at my local Blockbuster in Moline, IL. He was there for some new wrestling federation he was promoting. The event was at a pub in Donahue, IA. It was kind of sad. He is also writing a book.