I've come across a few discounts for scouts. In most instances it looks like you just need to show your uniform or if you are a Boy Scout, probably just your membership card for that year.

None of these require you to be traveling with your troop

Great Wolf Lodge - $159 a night (very select dates, and doesn't look like any over the Summer). Usually Sun-Thurs nights.

Sesame Place - $25 tickets and they receive a patch after doing an activity
Sesame Place


Disney!! For Girl Scouts It's too late for this year, but something to keep in mind for next year. The tickets are SOO much less expensive than regular prices.
Disney

Lancaster Science Factory
Free admission for your boy/girl scout. The Cub scout link is to the right of the page
Lancaster Science

If you know of any others, please post!