4x68 - Harry Connick Jr.

June 7, 1999

4x69 - Caroline Rhea

June 8, 1999

4x70 - Damon Wayans

June 9, 1999

4x71 - Timothy Hutton

June 10, 1999

4x72 - Mike Myers

June 14, 1999

4x73 - Rob Lowe

June 15, 1999

4x74 - Mike Myers

June 16, 1999

4x75 - Heather Graham

June 17, 1999

4x76 - Felicity Huffman

June 21, 1999

4x77 - Jimmy Kimmel

June 22, 1999

4x78 - Adam Sandler

June 23, 1999

4x79 - Richard Belzer

June 24, 1999

4x80 - Margaret Cho

June 28, 1999

4x81 - Scott Wolf

June 29, 1999

4x82 - Roseanne Barr

June 30, 1999

4x83 - Rob Schneider

July 1, 1999

4x84 - Adam Arkin

July 12, 1999

4x85 - Miss Piggy

July 13, 1999

4x86 - John Leguizamo

July 14, 1999

4x87 - Robert Klein

July 15, 1999

4x88 - Christa Miller

July 19, 1999

4x89 - David Brenner

July 20, 1999

4x90 - Third Anniversary Special

July 21, 1999

4x91 - Joely Fisher

July 22, 1999

4x92 - Donny Osmond

July 26, 1999

4x93 - Wendie Malick

July 27, 1999

4x94 - Vince Neil

July 28, 1999

4x95 - Janeane Garofalo

July 29, 1999

4x96 - Bebe Neuwirth

August 2, 1999

4x97 - Garry Marshall

August 3, 1999

4x98 - Denis Leary

August 4, 1999

4x99 - Jeffrey Tambor

August 5, 1999

4x100 - Dave Foley

August 9, 1999

4x101 - Dom Irrera

August 10, 1999

4x102 - Pierce Brosnan

August 11, 1999

4x103 - Eduardo Sanchez & Daniel Myrick

August 12, 1999

4x104 - Carson Daly

August 16, 1999

4x105 - Molly Ringwald

August 17, 1999

4x106 - Sarah Jessica Parker

August 18, 1999

4x107 - French Stewart

August 19, 1999

4x108 - Cheryl Ladd

August 23, 1999

4x109 - LL Cool J

August 24, 1999

4x110 - Dwight Yokam

August 25, 1999

4x111 - Nia Long

August 26, 1999

4x112 - Summer Spectacular

August 30, 1999

4x113 - Elayne Boosler

September 13, 1999

4x114 - Tom Green

September 14, 1999

4x115 - Jason Priestly

September 15, 1999

4x116 - David Cross

September 16, 1999

4x117 - Andy Richter

September 20, 1999

4x119 - Dave Chappelle

September 22, 1999

4x120 - Steve Zahn

September 23, 1999

4x121 - Norm Macdonald

September 27, 1999

4x122 - Melissa Joan Hart

September 28, 1999

4x123 - Richard Lewis

September 29, 1999

4x124 - Bruce McCulloch and Mark McKinney

September 30, 1999

4x125 - Greg Proops

October 4, 1999

4x126 - Maury Povich

October 5, 1999

4x127 - Brooke Shields

October 6, 1999

4x128 - Molly Shannon

October 7, 1999

4x129 - Rebecca Gayheart

October 18, 1999

4x130 - Steven Wright

October 19, 1999

4x131 - Amy Brenneman

October 20, 1999

4x132 - Melissa Gilbert

October 21, 1999

4x133 - Cathy Moriarty

October 25, 1999

4x134 - Louie Anderson

October 26, 1999

4x135 - Sarah Michelle Gellar

October 27, 1999

Tonight, actress Sarah Michelle Gellar, star of Buffy the Vampire Slayer.

4x136 - Melanie C.

October 28, 1999

4x137 - Chris O'Donnell

November 1, 1999

4x138 - Jennifer Love Hewitt

November 2, 1999

Tonight, actress Jennifer Love Hewitt.

4x139 - Dave Grohl

November 3, 1999

4x140 - Roshumba Williams

November 4, 1999

4x141 - Kellie Martin

November 8, 1999

4x142 - Kathy Griffin

November 9, 1999

4x143 - Christina Ricci

November 15, 1999

4x144 - Tori Amos

November 16, 1999

Tonight, singer Tori Amos promotes her new album, To Venus and Back.

4x145 - Lennox Lewis

November 17, 1999

4x146 - Bill Maher

November 18, 1999

4x147 - Goo Goo Dolls

November 29, 1999

4x148 - Stephen Rea

November 30, 1999

4x149 - Laura San Giacomo

December 1, 1999

4x150 - Michael Boatman

December 2, 1999

4x151 - Paul Rudd

December 6, 1999

4x152 - Senator Bob Dole, part 1

December 7, 1999

4x153 - Senator Bob Dole, part 2

December 8, 1999

4x154 - Rob Schneider

December 9, 1999

4x155 - Joan Lunden

December 13, 1999

4x156 - Shannen Doherty

December 14, 1999

4x157 - George Carlin

December 16, 1999

4x158 - David Boreanaz

December 20, 1999

4x159 - Jewel

December 21, 1999