This show and the later Hot in Cleveland are two good excuses to watch Betty White do her sexy-old-lady thing. The rest of the Golden Girls cast is great too, especially the inimitable Bea Arthur. There are many reasons this show ran for seven seasons, including its thoughtful treatment of aging and friendship.
Regarding Hot in Cleveland – is cable the boonies of TV nowadays?
Also: Check this out this review on Bitchy Media of shows that feature older women.