Season 6: Episode 11 - The Devil's Lube

The Devil's Lube: When Charlie’s good friend Andy dies prematurely, Charlie feels that his time on earth may be drawing to a close as well. Not only does he rush off to the doctor to get a complete check out, he also buys gifts for his friends and family (naturally excluding Alan) to ensure that he is remembered fondly if his life has run its course. He becomes so desperate to create a legacy for himself that he prepares to propose to Rose, but just as he is about to he gets word that he is 100% healthy and he returns to his hedonistic ways.