For computers that you may not have in front of you but want to test in terms of website usability, use browsershots.org to generate screenshots to verify that the sites appear correctly.
ReviewMe is a new site operated by Andy Hagans and Aaron Wall that will allow you to be paid to post reviews or products or services.
Yotophoto is a cool new website that allows you to search among free photos that can be used for your blog.
onNYTurf is a great Google Map hack that allows you to view the various NYC Subway lines.