Canon EF-S 18-55mm f/3.5-5.6 IS
This lens is a very welcome addition to Canon's range, and gives new dSLR owners a level of optical quality in the basic kit lens which was previously lacking; the addition of IS also goes a long way to increasing its flexibility. It makes an ideal lightweight general purpose-starter lens, and as such can only be recommended.
General everyday use on Canon's APS-C format DSLRs.
Critical use where optimal sharpness is crucial, or for capturing distant subjects, where more telephoto reach is required.