US TV
Rex Features
The eight-time gold medalist filmed scenes for the HBO drama earlier this month, according to E!.
It is not known when Phelps's episode will air. The new series begins on September 7.
The American sports star recently signed up to host an episode of Saturday Night Live. He will also present a gong at next months MTV Video Music Awards.
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Tube Talk
'Skins' Dakota Blue Richards preview Q&ASkins star Dakota Blue Richards tells us what we can expect in Franky's episode.
2012-13 Season
John Goodman for Roseanne Barr pilot?John Goodman is expected to join NBC comedy pilot< em>Downwardly Mobile.
US TV Interviews
'The Bachelor' Blakeley Shea - interviewModel was sent home following a two-on-one date with Ben and Rachel.
US TV Ratings
'Blue Bloods', 'Grimm' rise on FridayCBS beats ABC to win Friday night's ratings battle, thanks to Blue Bloods.
