TD Ameritrade is offering Free Trading for 30 Days plus $100 Bonus when you open your new TD Ameritrade before September 30, 2009.  If your total deposit is over $25,000, you qualify for the $100 Bonus plus Free Trading for 30 days.  If not, you only qualify for Free Trading for 30 Days.

Offer valid for one new individual or Joint TD AMERITRADE account opened by September 30, 2009 and funded within 30 days with $2,000 or more. To receive $100 bonus, account must be funded with $25,000 or more within 30 days of account open date. IRA and other tax-exempt accounts are not eligible to receive the $100 cash bonus