All through Trek, there have been one time guest that have either gone on to bigger things or did a Trek episode anyway, a few come to mind...
1) Joan Collins: Edith Keeler in TOS "City of the edge of Forever"
2) Kelsey Grammer: Capt Baitson in TNG "Cause and Effect"
3) Virginia Madson: Kellin in Voyager "Unforgettable"
5) Iggy Pop: Yelgrun a Vorta in DS-9 "The Magnificent Ferengi"
6) Mick Fleetwood: Antedian Dignitary in TNG "Manhunt"
7) Andy Dick: EMH on Federation Starship Prometheus on Voy "Message in
A Bottle"
8) Terri Garr: Roberta Lincoln in TOS "Assigment Earth"
9) Stephen Hawking: Played himself in TNG "Descent" Pt 1
10) Julie Newmar: Played Eleen in TOS "Fridays Child"
There are probably more, if you can think of any others I would love to hear about them...
Resistance is Futile
1) Joan Collins: Edith Keeler in TOS "City of the edge of Forever"
2) Kelsey Grammer: Capt Baitson in TNG "Cause and Effect"
3) Virginia Madson: Kellin in Voyager "Unforgettable"
5) Iggy Pop: Yelgrun a Vorta in DS-9 "The Magnificent Ferengi"
6) Mick Fleetwood: Antedian Dignitary in TNG "Manhunt"
7) Andy Dick: EMH on Federation Starship Prometheus on Voy "Message in
A Bottle"
8) Terri Garr: Roberta Lincoln in TOS "Assigment Earth"
9) Stephen Hawking: Played himself in TNG "Descent" Pt 1
10) Julie Newmar: Played Eleen in TOS "Fridays Child"
There are probably more, if you can think of any others I would love to hear about them...
Resistance is Futile