See bottom of post for update.
J Brand's Houlihan cargo pant retails for $231 at Cusp and is a favorite of celebrities such as Jessica Alba, Rachel Bilson, and Amanda Seyfried to name a few. (Photo credit)
If you're looking for a similar style pant for a lot less cash, check out this version from Lucky Brand. They retail for $79.50 and you can click on the photo below to purchase (also available in a tan color called cork).
*Update - 8/3/10* - As someone who has been contemplating the J Brand Houlihan's, I was very excited to see an even better look 4 less from Delias. These look a lot closer to the J Brand version, and even have a side zipper at the ankle. Click on the photo below to purchase these great pants for $49.50 (available only in the olive color shown).