Two and a Half Men returns with "Charlie" (Charlie Sheen) offering "Alan" (Jon Cryer) his expertise in breaking up with women.
The Big Bang Theory is back for a physics convention where hottie "Penny" (Kaley Cuoco) has to get between the big brains "Sheldon" (Jim Parsons) and "Leonard" (Johnny Galecki).
How I Met Your Mother celebrates its return with "Barney" (Neil Patrick Harris) out to party on Saint Patrick's Day.