Many people watch for just the commercials, and most like me love the game and can’t wait until next season! At the party I attended, it was like Mystery Science Theater 3000 with everyone spitting out the opinion quickly and often 
I would say we had more thumbs down then up, and very few that I can remember today. Godaddy (the use of females tearing off dress shirts), Doritos (funny ones, especially the Doritos ninja), Hyundai (people carrying the car), Etrade (Talking babies still work), Jay Leno, Letterman and Oprah (have no clue what it was for, but was awesome to see).
But by far the best commercial was definitely the Google one, very clever, very simple, and pulls on your heart strings. I only remember seeing it once, and it was so memorable. If you can think of a better commercial let me know in the comments, but I think they ended up with the best bang for the buck commercial by far: