Parul Sehgal is the host, filling in for Pamela Paul.
Scherzinger, who was serving as co-host, filled her seat.
That's one reason it is becoming less likely that Mr. Letterman will have guest hosts fill in during his absence.
Mr. Gibson, who is the oldest of the three network anchors, is the host of the Web newscast two or three days a week, and other hosts fill in when he is on assignment.
Other hosts fill a long list of Hollywood glitterati, including the director Rob Reiner, the "Lost" co-creator J. J. Abrams, the "Sex and the City" creator Darren Star and the actress Vanessa Williams.
6 51 The paperwork begins and we sit there for about an hour while our hosts fill out forms and wait for the parents.
Corden, who recently starred in John Carney's "Begin Again," will take the reins in March, with a series of guest hosts filling in until then.
Cosby was part of a group of hosts filling in for David Letterman on "The Late Show" while Letterman dealt with health issues. .
He hosted the show for almost seven years (except for one week in August 1980 when future Jeopardy! host Alex Trebek filled in for him), and left following a salary dispute with Griffin.
