So I noticed that a lot of 'dual' parts have opposing signs...do they do this on purpose or is it just coincidence? I think it's a bit of both haha

Mel Gibson (Cap)/Danny Glover (Cancer)
Leathal Weapon

Carl Weathers (Cap)/Sly Stallone (Cancer)
Rocky

Brad Pitt (Sag)/Morgan Freeman (Gem)
Seven

Val Kilmer (Cap)/Tom Cruise (Cancer)
Top Gun

Robert Downey Jr. (Aries)/Gwenyth Paltrow (Libra)
Iron Man

John Goodman (Gem)/Jeff Bridges (Sag)
The Big Lebowski

Sam Worthington (Leo)/Christian Bale (Aquarian)
Terminator Salvation
*to the last poster

What's so 'selective' about stating the obvious? If it's there it's there. I wasn't being very 'selective' about anything, and if I had a measly two or three examples maybe you'd have a point there, but I don't, and I'm sure I'm forgetting some.