Guest Stars Colm Meaney as Miles O'Brien Denise Crosby as Lt. Tasha Yar Patti Yasutake as Alyssa Ogawa John de Lancie as Q Andreas Katsulas as Tomalak Clyde Kusatsu as Admiral Nakamura Co Starring Majel Barrett Roddenberry as Computer Pamela Kosh as Jessel Tim Kelleher as Lieutenant Gaines Alison Brooks as Ensign Nell Chilton