Are these sentences correct:

The littel boy handed Santa a list that said he wanted: a truck, a train, and a million dollars.

Her mind flew so quickly-she had so much to remember-that she forgot to stop at the light

First sentence:
~~correct the spelling of "little"
~~delete the colon after "wanted"
http://grammar.ccc.commnet.edu/grammar/marks/colon.htm
Be sure to read the whole explanation, including when NOT to use a colon.

Second sentence:
~~use a dash, not a hyphen, after "quickly" and again after "remember" -- if you're not clear on the difference, look at what I just typed (word space hyphen hyphen space word).
http://grammar.ccc.commnet.edu/grammar/marks/dash.htm

=)

The corrected sentences are:

The little boy handed Santa a list that said he wanted a truck, a train, and a million dollars.

Her mind flew so quickly—she had so much to remember—that she forgot to stop at the light.