Sheffield United - nothing prepares you for the ultimately disappointing rollercoaster of life like being a Blade.
Very sadly, I follow a team in most of the major football leagues for a variety of reasons, as well as keeping an eye on the results of a few more). I also have teams I'll follow in pretty much any major sport league - how can you watch it if you've no-one to root for?
So I also follow Hearts, Deportivo La Coruna, Sparta Rotterdam, Bordeaux, Boavista, Genoa, Kaiserlautern & Ferencvaros, and look out for East Stirlingshire and Scarborough Athletic.
And Bradford Bulls (Rugby League), West Coast Eagles (AFL), Yorkshire CCC, Miami Dolphins, Boston Red Sox, Miami Heat, Miami Hurricanes. Don't really have an NHL team.
And England/GB (delete as the sprot requires) in anything..