Regis Philbin Subs on Another 'Millionaire' THR

Regis Philbin’s keeping a busy schedule even in advance of hip replacement surgery, reports The Hollywood Reporter.

This week, he’ll sit in for Meredith Vieira as host of the syndicated version of "Who Wants to Be a Millionaire," which he already hosts in primetime. The stint was taped earlier this month. It’s the first time he’s hosted the weekday version.

--Elizabeth Jensen