Season 2, Episode 5 - The Euclid Alternative
Aired October 20, 2008
Wgeb Leonard starts working nights at the university, Sheldon - who doesn't drive - depends on his friends to get him to and from work. When the gang grows tired of chauffeuring Sheldon around, they hold an intervention to get him over his fear of driving and help him pass his driving test.
Season 3, Episode 18 - The Pants Alternative
Aired March 22, 2010
When Sheldon receives a coveted award, his fear of public speaking threatens to stop him collecting the achievement. After his friends try to help him work through his fears, a surprisingly uninhibited Sheldon takes the stage.
Season 6, Episode 21 - The Closure Alternative
Aired April 25, 2013
When one of Sheldon's favorite TV shows is canceled, Amy helps him work through his compulsive need for closure. Meanwhile, Raj finds his girlfriend's blog, and Penny searches for something she's passionate about.