There have been a few instances in which I've gotten 2 laser power-ups in a row, and I've noticed that the beams shot from the Vaus look slightly different after I acquire the second power-up. Is it supposed to have a different effect? I'm usually near the end of a level by the time I manage to get 2 laser power-ups, so I haven't noticed any significant changes.
And also, are there any more power-ups that change when you get doubles? I've definitely gotten two expansion power-ups in a row, but it didn't change anything...
Now that I think of it, Petey just kidnapped two princesses at once! He's the man. ~Socran
My FAQ talks about power-ups at the bottom.
I don't talk too much about multiples, but I do mention Laser and Expand. I think Barrier is the only other one that gives multiples (either that, or I'm getting it confused with the XBox Live version).
Sadie Banner -- http://i75.photobucket.com/albums/i311/inviso87/SadieBanner.jpg
http://www.youtube.com/watch?v=ILyzyQUUnL4 -- Watch me own Derolix