i know what you are talking about. i practice better to drum beats than i do a metronome. I bought this cd and dvd combo from this guy in australia. it is awesome. it has a cd with backing trcks of drums only, also has backing tracks of guitar licks and such. it also comes with a dvd for learning things, most notably power chords. i think i paid like $20 and it was WELL WORTH IT! I downloaded the drum tracks to my ipod, and when i practice, i just plug my ipod into my amp and away we go!

http://www.greatguitargiveaway.com/

check it out....shipping time is somewhat lagged since it comes from australia, but trust me..it is exactly what you are looking for. it has various tempos as well. i can email you one of the trax to show you what they are like before you buy it. i cant email you all of them, because that would be copyright infringement...but dont mind sending one so you can give it a test run.