Regis Philbin, Rachael Ray and others sign on to watch the fur fly for inaugural feline sporting competition
The homegrown chef's talker will air in 90 percent of the country through 2016
Former "Live" host will drop in on Rachael Ray once a month
The Oprah Winfrey Network will also air reruns of both shows
Former president says he couldn't handle the training regimen
Domestic divas appear on each other's shows for first time.
Emmy-winning show set to run through 2011-12 season.
Rivals meet up for peculiar photo op at food fest.