Who wants to start a Sheldon Cooper fan club?
You can follow Sheldon on Twitter at http://www.twitter.com/SheldonCooper
Rajesh Koothrappali is http://twitter.com/TheRaj
Howard Wolowitz is http://twitter.com/wolowizard
Leonard Hofstadter is http://twitter.com/leonardhofstadt
And finally Penny is http://twitter.com/pennyin4B