
How I Met Your Mother is the motherlode of Comedy, excuse the expression. It is my all-time favorite comedy and I don't know anyone who's watched the show and haven't told me "Oh, my God, Barney is awesome!", if you want to know why, well watch the show. You will love the charachters if you just give it a few episodes, and you really should. I stream it on Ninjavideo.
Here is a link to one scene which I love, I hope it makes sense even though you haven't watched the show: LINK
Robin in the show is canadian and of course the americans have to joke about that. LINK and you just live to see things like this LINK.
I give How I Met Your Mother 5/5. You should really watch this one. Give it at least 4 episodes and I know you'll love it.