It’s guest stars galore as the May sweeps period begins — in April.
On "7 th Heaven," airing 7 p.m. today on KASW-TV (Channel 61), a thunderstorm threatens to keep former series regulars Barry Watson and Jessica Biel from returning for their TV sister’s wedding. Will they make it to the chapel on time? Hold onto your pews. It’s going to be a bumpy ride.
Rocker Elvis Costello gets the best of "Frasier" at 8 p.m. Tuesday on KPNXTV (Channel 12). The singer turns up in the Cranes’ favorite coffeehouse, and his mellow demeanor annoys Frasier to no end.
Pop singer Jessica Simpson is alone and frightened as a babysitter in "The Twilight Zone" at 8 p.m. Wednesday on KUTP-TV (Channel 45). Seems that her charge’s dolls aren’t exactly the Ken and Barbie types.
After nine years on the air, "Friends," airing 7 p.m. Thursday on KPNX-TV (Channel 12), has discovered a person of color living in their version of New York City. Former "Talk Soup" host Aisha Tyler starts a four-week run on the popular sitcom, catching the eye of Ross.
And in what seemed destined to be a monumental showdown on "Will & Grace," 8 p.m. Thursday on KPNX-TV (Channel 12), Madonna plays Karen’s new roommate. They get along famously as they share interests in clothes, nightlife and men. Let the catfight begin.
Other highlights for this week:
• "Revenge of Celebrity Assistants," 9 p.m., E!.
Sidekicks to the stars get a chance to mouth off in this gossip-filled special.
• "Mr. Personality," 8 p.m., KSAZ-TV (Channel 10). Monica Lewinsky hosts this new dating show in which a woman chooses a suitor from 20 masked bachelors.
• "Just Shoot Me," 7 p.m., KPNX-TV (Channel 12). The David Spade office comedy returns to air its final episodes. This week, Morgan Fairchild stars as an ex-centerfold model who catches Finch’s eye.
• "Michael Jackson’s Home Movies," 7 p.m., KSAZ-TV (Channel 10). This special has the scandal-prone singer narrating clips from his personal archives.
• "Laffapalooza," 11 p.m., Showtime. Jamie Foxx hosts this comedy special putting standup comics in the spotlight.
• "Fastlane," 7 p.m., KSAZTV (Channel 10). The season finale has Van (PETER Facinelli) threatened by a psychopath while Billie (Tiffani Thiessen) is taken hostage.
• "John Doe," 8 p.m., KSAZTV (Channel 10). In this season closer, John’s visions worsen as he comes closer to the organization pursuing him and people connected to his past.
• "Touched by an Angel," 7 p.m., KPHO-TV (Channel 5). Angel Monica may have her wings clipped in this two-part series finale when her personal judgment day comes.
• "Eloise at the Plaza," 6 p.m., KNXV-TV (Channel 15). The beloved children’s character is featured in this live-action made-for-TV film starring Julie Andrews and newcomer Sofia Vassilieva.
• "The Simpsons," 7 p.m., KSAZ-TV (Channel 10). Homer’s song catches the attention of The Talking Heads’ David Byrne and is a hit. Meanwhile, Lisa falls in love with Jonathan Taylor Thomas.
• "A Painted House," 8 p.m., KPHO-TV (Channel 5). A murder in a small town in 1950s Arkansas and mysterious strangers rock the world of a 10-year-old boy in this TV adaptation of John Grisham’s best seller.