I always thought Blondie recorded the first modern rap song too, I think it was more like '77 or '78 though. I think there was a VH1 special about the birth of rap and that was the conclusion reached in the program.
I just recently "rediscovered" Blondie, GOOD stuff IMO. Their greatest hits CD is in my car's 6 disk changer, along with Rob Zombie, metallica, Gretchen Wilson, Celtic Women and a mix of Fuges (classical). I have a strange taste in music.
One of my favorite songs ever is Atomic, but I am really not a blondie fan. I just like that song, musically.
Heck, I have everything from Veggietales to Nine Inch Nails to Garth Brooks to Casting Crowns on my iPod. I don't think your taste is strange.