Living Social, a daily deal site similar to Groupon, is offering a great deal on movie tickets right now. For just $9 you can purchase two movie tickets from Fandango. The voucher you purchase can only be redeemed online, though, so be sure to check here that the theater in your area allows you to purchase tickets online (the Albany, OR theater does). Ticket prices vary by region, but this is a savings of up to 70%.
Added bonus: prepaying for tickets will force you to have that date night/girls' night/mother-daughter day. Since you will have already paid the $9, that's one less excuse not to go!