In December, Baseball America posted its list of the Angels' Top Ten Prospects and today, Rob McMillin at 6-4-2 Blog details Baseball America's Numbers 11-29 Angels prospects.
UPDATE: Some guy at Baseball Prospectus has a list of the Top 100 Minor League Prospects.
Angels:
5. Brandon Wood (listed as SS)
28. Nick Adenhart (RHP)
78. Erick Aybar (SS)
85. Sean Rodriguez (SS)
88. Hank Conger (Catcher)
Some teams only had one player listed in the Top 100, so this is pretty cool.