Some of the in car commentary makes me

350z gets punted
YouTube - SPEED TV Coverage of the T-2 Last Lap Crash
In car video of the 350z crashing
YouTube - 2008 SCCA Runoffs - Last lap T2 Crash

R8 into the wall at VIR
YouTube - In-car footage of Audi R8 Wreck at VIR

NSX backed into wall at Road America
YouTube - NSX crash at Road America

Awesome battle between Porsche and Corvette (Final lap starts at 1:50). Ends with a crash at the finish line.
YouTube - SPEED Last Laps, LAST LAP ALMS Laguna Seca