Yes, Mel Harris guest starred in two episodes of SVU as Eileen Switzer:
Season 15, episode 9, "Rapist Anonymous"
Season 15, episode 11, "Amaro's One-Eighty"
No she did not.
Actor Jerry Mathers has no roles listed for any of the Law and Order series.
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Genevieve Bujold has no credits for any of the Law and Order series.
Ryan Phillipe has not appeared in any of the Law and Order series.
Ryan Phillipe's credits do not include any 'Law and Order' appearances.
Carol Channing has no credits listed for any Law and Order series.
Jan-Michael Vincent lists no credits for any of the Law and Order series.
Robert Pattison has no credits for any of the Law and Order series.
No. Unless he went uncredited, no Jamie Kennedy has appeared as a guest role on Law and Order: SVU.
the answer is yes she wil guest star on svu some time during the 11th season miley and the cast of svu are pretty cool with each other she went to the set oneday to see what it would be like when she guest stared on it she quotes"the whole cast is very funny excpicaly mariska and chris".
No, Daniel Tosh has no credits for any of the Law and Order series.