1. Penny and Leonard head to Vegas to elope.
Despite moving at a glacial pace in his relationship with Amy, Sheldon sees fit to criticize Penny and Leonard for not moving forward in their relationship. To be fair, they’ve been engaged for over a year and still haven’t set a date. Both Penny and Leonard try making excuses for themselves, but while they convince Sheldon, they can’t seem to convince themselves. So Penny proposes the two head to Vegas and get married that night.