was wondering if anyone knew which BMW's the halo/angel-eye headlights came on as stock equipment.

E39 5-series (the later ones), E60 5-series, E65/E66 7-series, E90/E92 3-series. I'm not 100% on the SUVs, the new X5 might have em.

2002-2005 (facelifted) E46 3 series
1999-2001 (facelifted) E35 7 series
X3's have them
2004-2006 X5's (facelifted, when they got rid of the 4.6L and added the 4.8L)
Dont forget the E85/86 Z4's
Refreshed Z3 (2001-2002)
E63/64 6 series
The Z8 prolly had them
E87 1 series
and maybe the later 8 series had them, IDK

Thats what I can think of right now