I always loved Crash Bandicoot when I was a kid. Then Naughty Dog disbanded itself from the name, and thats when everything went downhill after Crash Bash. I was thinking of playing Crash Of The Titans, but after looking it again, thats not the same Crash I've known.
The first 3 (Crash Bandicoot, Crash Bandicoot 2: Cortex Strikes Back and Crash Bandicoot 3: Warped) and Crash Team Racing. And yes, all the rest aren't as good as those. It's important to mention that Crash Team Racing is fantastic! Way better than Mario Kart 64.
Well Mario Kart had a famous version on the Snes, making the N64 version a instant hit, while Crash Team Racing was new and underhyped. I'm not saying Mario Kart 64 isn't good, but CTR is way better.