During their off-times, Sam has flings with many not-so-bright "sexy women",[9] yet fails to pursue a meaningful relationship.[9] After Diane is written out of the series, he tries to pursue Rebecca Howe, with varying results. At the end of the series, he is still unmarried and faces his sexual addiction with the help of Dr. Robert Sutton's (Gilbert Lewis) group meetings, advised by Frasier. Shelley Long as Diane Chambers: An academic, sophisticated graduate student attending Boston University.[7] In the pilot, Diane is abandoned by her fiancé, leaving her without a job, a man, or money.