Thursday and Friday are great evenings for tv, so here’s some recommendations to guide you through your television watching.

Thursday, February 2:

8/7c, CBS – The Big Bang Theory. This week, the award winning comedy finds Sheldon (Jim Parsons) and Leonard’s (Johnny Galecki) friendship contract in danger when Sheldon acts too selfish. Meanwhile, Wolowitz (Simon Helberg) tries to figure out a new astronaut nickname for himself.

8:30/7:30c, NBC – Parks and Recreation. It’s Valentines Day in Pawnee, and Leslie (Amy Poehler) takes it upon herself to find Ann (Rashida Jones) a new beau. Meanwhile, Ben (Adam Scott) is stumped by Leslie’s Valentines scavenger hunt and needs the help of Ron (Nick Offerman).

Friday, February 3:

8/7c, NBC – Who Do You Think You Are. Season 3 premieres with a look into Martin Sheen’s past, tracking his family to Ireland and Spain to find an ancestral activist, as well as an imprisoned relative.

9/8c, FOX – Fringe. Astrid (Jasika Nicole) gets a surprise visitor in an alternate universe, while Olivia (Anna Torv) and Peter (Joshua Jackson) trail a killer armed with a toxic weapon.