Check Your Credit Report
AnnualCreditReport.com - Free credit report (no score) from each of the 3 credit bureaus, Equifax, Experian, and Transunion
CreditKarma.com - Free credit score
Credit.com - Free credit "report card"
FreeCreditReport.com - Free credit report with scores but have to cancel trial membership to avoid getting charged
Credit Bureaus
Other
OptOutPrescreen.com - Notify credit bureaus to stop selling your name to companies for preapproved offers of credit and insurance. Reduces unwanted mail that could other be stolen and used to open accounts in your name.