Uncross the Stars - 2008 is rated/received certificates of:

USA:PG-13

begin with the fingers crossed; uncross them.

Uncross the Stars - 2008 was released on:

USA: 5 April 2008 (Phoenix Film Festival)

USA: 29 September 2009 (DVD premiere)

While one would normally not waste his/her time answering a question, there is no such thing as an uncross-able river. Rivers are in nature, relatively easy to cross. I suppose the River Styx is pretty impossible to cross, seeing as it is fictional.

To uncross a crossed check, you can simply draw a straight line through the original line, sign on top of the new line, and deposit the check at your bank. Make sure to also write "uncrossed" or "not crossed" on the check to notify the bank.