Capitalization

Poor spelling skills bother the crap out of me more-so than lack of commas , etc.

TO : "This is to go to _____________ ."
TOO : " There are too many people here ."
TWO : " I get two of these Underoo's ?!? "

THERE : " It's over there ."
THEIR : " It's their home ."
THEY'RE : " They're going to see 'Flash Gordon' . "