no it has not been canceled
Chuck was cancelled for the simple reason that it wasn't a great show and didn't have enough viewers to last. Please watch better TV shows!
CBS has canceled them.
Don't know if this is true but I found this answer on this site: Is the NBC show Chuck canceled? No. Season 3 is slated to premiere sometime in March 2010
yes
Yes.
Dollhouse has been canceled.
Yes.
No, its been canceled.
No there are new episodes in 2011
yes
The Super Bowl has never been canceled and has occurred every years since 1967.