Leonard gets a crush on a beautiful waitress, striving to make her pay attention to him, and he's made fun of about it on a daily basis by three other geeks, including the other lead Sheldon. Leonard, together with them, and with the waitress Penny, interweaves a riotous story.
The four geeks are so lovable that I’m sure we can't help laughing at their remarks or behaviors. Should you be doubtful of what I’ve just written here, or want to dare deny it, try laughing by no means. Here's some friendly advice, though: it must be a lot healthier to laugh as much as you want than to bear doing it. Episode 4 I think is the hardest part, if you'll choose to bear laughing.
Anyway, if you're looking for a very funny comedy and can't decide which to watch, THE BIG BANG THEORY won’t betray you.