Dick Clark
For the ABC New Year's Eve 2007-08, and 2008-09 appearances, Clark still exhibited noticeably slurred and somewhat breathless speech (which appear to be permanent), but improved from previous years, in addition to using his arms again. For the 2008-09 broadcast, he increased his hosting duties to the point where he split duties roughly evenly with Seacrest during the half-hour leading up to the ball drop. (In previous years following the stroke, Clark had only hosted the countdown and one brief segment.)
The improvement before death.