Sheldon irks the gangs with his obession with proper Christmas gift protocol. Lenoard's crushed when Penny dates a colleague of his.

Charlie finds himself re-examining his wild ways after an old friend dies during a visit.

Miley agrees to go out with a charming boy named Connor for the holidays. Connor's elfin stature and his job helping Santa at the mall, however, clashes with her idea of the perfect guy. The neighborhood Scrooge Mr. Dontzig offers to get Jackson into the college of his dreams, but ...

As Christmas approaches, Liz reaches out to children in need, while Jack desperately looks for ways to avoid his mother while she convalesces at his home.

Alan contemplates retiring when Evelyn states that she'll take care of Jake's college education. Meanwhile, Jake displays a talent that may eliminate the need for college altogether.

Leonard seeks Penny's counsel when his relationship with Stephanie takes off faster than he'd like. Sheldon's hypochondriac tendencies get the better of him.

With Jack in tow, a reunion sees Liz finding out her memories of high school differ greatly those of from her classmates. Don Geiss awakens from his coma and makes his choice for the new GE CEO. Tracy and Jenna are threatened by the popularity of Kenneth's elevator jokes.