Even in "Turbo F.A.S.T.", where he's played by The Other Darrin, he still has his moments of awesome.
Turbo winning even without his powers.
Three words: TUCK AND ROLL!
The entire climax was awesome. Both Turbo and Guy are literally struggling to the finish line, with Guy pulling his car.
Kim-Ly trying to beat Gagne up on the track. Also a funny moment.
The last snail race. Turbo has lost his Super Speed and is with the Snail Crew on the line.
Whiplash: All right, so you got a new shell. Can yours do this? HIT IT, BURN!!
Cue Burn's shell turning into a freaking hot rod motor, White Shadow's into a damn monster truck, Whiplash's into a friggin' jet turbine, Smoove Move's into a huge-ass sound blaster and Skidmark's into a downright hovercraft propeller!! All that Transformers-style!