Offseasons in the past sports year-

Red Sox: added bigtime players, very hyped up team, didnt work out
Philadelphia Eagles: lots of attention for big signings, not a good season
Miami Heat: got the Big 3, made it to the Finals but lost

Can you think of any more examples of teams that made a lot of big name moves in an offseason semi-recently?

This year in baseball it will be the Angels. In basketball maybe wherever Dwight Howard goes, or maybe there's no team like this.