I've got a few copies floating around:

VHS (OT)
1984 SW and ESB
1986 ROTJ
1990 Trilogy Boxed Set
1992 Trilogy Boxed Set
1995 Faces Trilogy Boxed Set
1997 SE Trilogy Boxed Sets (Wide & Full screen)
2000 SE Trilogy Boxed Set

VHS (PT)
2000 Ep. I (Full & Wide screen)
2002 Ep. II

LD (OT)
2003 'The Definitive Collection' Boxed Set (WS)

Beta (OT)
1984 SW and ESB
1986 ROTJ

DVD (OT)
2004 4-Disc Boxed Set (WS)
2006 SE + GOUT Trilogy

DVD (PT)
2001 Ep. I (WS)
2002 Ep. II (WS)
2005 Ep. III (WS)

...But, most were bought second hand.

(Releases are Fullscreen, unless otherwise noted)