The week's highlights include more John F. Kennedy specials, more major guest stars and the latest turns in reality contests. Some programs to keep in mind:

Bryan Cranston of "Breaking Bad" visits "How I Met Your Mother" at 8 p.m. Monday on CBS. The Emmy-winner plays Ted's former boss. In other developments, Barney accepts challenges from Robin and Lily.

John Cho guest stars on "Sleepy Hollow" at 9 p.m. Monday on Fox. "Bones" fans will get two new episodes of that Fox series: at 8 p.m. Monday and at 8 p.m. Friday, the show's new time slot.

Justin Kirk ("Weeds") guest stars on "The Blacklist" as Liz and the FBI fight to save the U.S. economy. Learn more at 10 p.m. on NBC.

There's a new "Modern Family" at 9 p.m. Wednesday on ABC. Phil and Claire will try to mark their 20th anniversary, but the school fair will get in the way.

"Nashville," at 10 p.m. Wednesday on ABC, offers guest stars Will Chase ("Smash"), Oliver Hudson ("Rules of Engagement") and Kimberly Williams-Paisley.

On "The Big Bang Theory," Penny will confront Raj's former girlfriend, Lucy (Kate Micucci). The episode airs at 8 p.m. Thursday on CBS.

"Raising Hope" returns to the Fox schedule at 9 p.m. Friday with back-to-back episodes. Jeffrey Tambor of "Arrested Development" guest stars as a mysterious neighbor. 

Lady Gaga does double duty as host and musical guest on "Saturday Night Live" at 11:30 p.m. Saturday on NBC.

Reality programming

On "The Voice," the Top 12 finalists perform at 8 p.m. Monday on NBC. The results will be revealed at 9 p.m. Tuesday.

"Dancing With the Stars" will name its winner in two weeks, and the ABC dance contest has to continue narrowing the field. The six remaining celebrities perform at 8 p.m. Monday. The first round is the usual pair dance; the second round will feature a trio dance.

"The X Factor" announces which act is out after last week's problem with the graphics. The news comes in the performance show at 8 p.m. Wednesday on Fox. Results for this week will be shared at 8 p.m. Thursday.

JFK 50th anniversary

The John F. Kennedy assassination will be examined in several major programs.  PBS has three: "American Experience" studies the man's life and presidency in the four-hour "JFK" at 9 p.m. Monday and Tuesday. "Nova" looks at the forensic evidence in "Cold Case JFK" at 9 p.m. Wednesday. "JFK: One PM Central Central Standard Time" at 10 p.m. Wednesday examines how CBS anchor Walter Cronkite announced the president's death to the country.

CBS can dip into its extensive library on the national tragedy. "Face the Nation" moderator Bob Schieffer looks back at assassination in "As It Happened" at 9 p.m. Saturday.