Tony Pedgregon.   Even the losers will sign your autograph right after the race. Try THAT in NASCAR!  Most won't happen.

NHRA is best full day racing ticket.

I'm a race junkie and have to take exception to your NASCAR reference.  Granted, after the race may not be the most accessible time.  They've just finished a couple hours of work and want to get on the road home.  But otherwise, NASCAR drivers are indeed accessible.  The primary advantage to NHRA is that the pit area is open to all spectators.  But that doesn't mean the actual drivers are available all the time.  

I'm not a big autograph hound, although I've got many.  Actually had a NASCAR garage pass for a race several years ago...now THAT was cool!  Watched the race on pit road.  Went to the drivers meeting with DW.  

Both NHRA and NASCAR are awesome events to be at....it's just a neat atmosphere.