The Diesel drag racing series is a ton of fun, more like NHRA was 20+ years ago (probably more like 30+). Much more of a "grassroots" feel, with the classes evolving as the vehicles evolve. The guys making the rules are just another group of guys with similar interests, not a dog food salesman looking to make a buck.
www.nhrda.com
www.runnadm.com
Probably the most impressive part is when you see 4x4 3/4-ton crew cab pickups (like many people tow with) that are capable of running 9 second 1/4-mile passes. While the 9-second trucks aren't as streetable any more, there are a number of 10 second trucks that still get driven regularly (and some guys even tow their travel trailer to the track, unhook the truck and run 10's or 11's).