Or at free-dc, go onto any of your "project XYZ user stats for crashtech" pages, such as this one, and there follow the hexadecimal Cross Project Identifier link. This sends you to your cross-project page with all your project scores and the combined score.
A different kind of milestone: I am 1st in Sweden and in the TeAm in two projects: Amicable numbers and NumberFields@Home. LoL!
Sweden is a small countr; and the TeAm is also quite small (compared to some other teams).
Source: boincstats.com, look for petrusbroder, and the projectlist.