Martellus Bennett does a mean Stevie Wonder impression. The Dallas Cowboys tight end proved it last night when he swept into Crest Cadillac/Crest Infiniti in Plano, sat down at a player piano, threw his head back and started rocking from side to side. Bennett, who admits to having come across as “weird” on this season’s Hard Knocks HBO show, was there to sign photos for one of the dealership’s customer-appreciation events. Up close and personal, he’s as nice as anyone you’ve met–earnest, thoughtful, upbeat. He’s also a huge Crest fan, having just bought an Escalade ESV for his mom (“she wanted to feel safe”) and a regular Escalade for himself. If you can call a tricked-out SUV with 26-inch rims and a 37-inch flat-screen TV “regular.” After signing some, Bennett–shown in this Linda Fusco photo flanked by Crest GM Mike Brosin and his wife Jana–took the microphone and turned on the charm. “Anybody wants to buy a car, just come to me,” he mugged for the big crowd, nodding at the Crest salespeople. “I’m cheaper than anybody here!” And everybody cracked up.