CompuCredit Corp. v. Greenwood was 8-1 with RBG in dissent.

Minneci v. Pollard was also 8-1 with RBG in dissent.

Justice Ginsburg seems to like to dissent solo quite a bit (see here and here).

Update: More from Kedar:

Justice Ginsburg also provided the lone dissenting vote in Minneci v. Pollard. Over the past ten years, Justice Ginsburg has only provided the lone dissenting vote about once every other term (.5 times per year), so it was especially surprising to see her do it twice in one day. During the Roberts Court, there have been an average of 7.4 8-1 decisions per year, making today’s barrage of 8-1 opinions even more surprising.