Many winners of leagues have good sleeper picks that really compliment their stars. Late in drafts, it's a good idea to take a flier or two on guys you think could end up putting up numbers at some point in the season.
The quarterback position in fantasy football is normally pretty straight forward. Most people will end up starting the same quarterback on a weekly basis.
That being said, it can still be useful to follow all of the quarterback situations around the league (think of Michael Vick from last year). Here are some potential backups that could end up having value at some point this season.