The Best Episodes Written By Jennifer Glickman

A doctor's Halloween house call is anything but ordinary when it is revealed that Mel was once a teenage witch and her help is needed in a battle against an evil foe.

When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.

With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team

Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.

Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.

Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.

With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.

Sabrina gets caught using her magic on Leonard's web-cam. While in his computer trying to destroy the evidence she gets an involuntary makeover and winds up looking like a cartoon siren.