I actually liked this movie when it came out, but obviously it doesn't hold up past the age of 11.
One thing that always bothered me, even as an 11 year old, was the 'house of mirrors' scene. Both Tango and Cash claim they knew which was the real bad guy using visual clues (monogram and ring finger.)
This always bothered me because of the nature of a 'house of mirrors' . . . there are reflections of reflections . . . and in that case, wouldn't the monogram and ring finger appear correctly in half of the mirror panes?
Also, don't you have to stand IN FRONT of a mirror to cast a reflection? Somehow, this bad guy stands BEHIND the mirrors.