Yes, "Jeopardy" keeps the wits sharpened, but if you really want to give your brains a workout, join "The Chase," which returns for its third season. Mark "The Beast" Labbett has officially taken the place of Simon Cowell as the genius you love to hate as he tries to keep contestants from walking away with money — and bragging rights. 7 p.m. GSN
What's for dinner?
In "Restaurant Startup," TV personality Joe Bastianich, culinary consultant Waylynn Lucas and chef Tim Love invest their own money in businesses that might just have the next great food idea. Now if you'll excuse me, I have to pitch the trio my master plan to sell hot popsicles. 9 p.m. CNBC
This month's TCM star is Maureen O'Hara, a feisty actress who could hold her own against iconic leading men like John Wayne. There's a slew of her films worth catching, but see if you can get permission to stay up late for 1960's "Our Man in Havana," co-starring Noel Coward and Alec Guinness. 1:30 a.m. TCM