In the premiere episode of “Back to the Grind,” Loni Anderson (“WKRP In Cincinnati”) spends a day and a night working in live radio-beginning as switchboard/receptionist to “rap” DJ to working the phones at Loveline with Dr Drew Pinsky. Also, Erik Estrada (“CHIPS”) attempts to work the streets with the actual CHIPS academy but first, he has to get his motorcycle license-which proves not to be an easy task for the star.