The TVLine-Up: TV Worth Watching This Friday

On TV this Friday: Chuck embarks on his final mission, the Fringe team tracks a death-predicting girl, Spartacus returns with a Vengeance and more. We’ve picked out eight programs to keep on your radar.

8 pm Chuck (NBC) | Two-hour series finale: As Sarah returns with a huge secret, Chuck enlists his family, friends and some unexpected allies in the race to stop Nicholas Quinn from destroying everything Team Bartowski has built over the past five years. (Read Part 1 and Part 2 of our finale previews.)

8 pm Shark Tank (ABC) | Two cat-themed business proposals may be less than purrfect for the panel.

Chuck Flashback! We Spy 28 Fun Guest Stars

9 pm Fringe (Fox) | Olivia continues to cope with the ominous warning from the Observers; Peter and the team track a girl with the ability to predict death.

 Fringe Update: Season 5 Discussions Underway, J.J. Abrams ‘Hopeful’ Show Will Be Back

10 pm Spartacus: Vengeance (Starz) | Season 2 premiere: Spartacus (now played by Liam McIntyre) discovers the grave responsibilities and costs involved as the new leader of freed slaves; Claudius Glaber’s arrival forces Spartacus to keep his rebellious band intact.

10 pm Merlin (Syfy) | A mysterious stranger arrives in Camelot with a secret that threatens to change the landscape of the kingdom forever — and Merlin promises to help him.

10 pm Bering Sea Gold (Discovery) | Series premiere: Set in Nome, Alaska, this eight-part series focuses on dredge operations run by driven, and often desperate, people whose very livelihoods depend on finding gold.

10 pm Portlandia (IFC) | With everyone turning into DJs, Fred and Carrie try to escape the city before they too are overtaken by the craze; two Gutterpunks assess the best way to beg for money.

10:30 pm The Increasingly Poor Decisions of Todd Margaret (IFC) | After his father leaves the country, Todd seeks solace in a pub, but instead finds himself enmeshed in a night of debauchery at a bachelorette party from hell.

Which of the above is must-see TV for you? Also, hit the Comments to politely offer tune-in suggestions of your own.