Hey Aaron,
Logged in just for you (well, and me, because I love this game).
Seeing the same issue here, alien on the left hand side covered by Hidden Movement Screen
Playing on a dual monitor setup, at 1280x1024 in windowed mode. GeForce DTX 460 dual head graphics card.
Save File - http://www.mediafire.com/download/3c3kg3mjni7c2sy/2013-08-02_18.41.49.sav
DXDiag - http://www.mediafire.com/download/cfbd4e79lj619b7/DxDiag.txt