The Visual Search feature of Bing includes an awesome interface for finding apps for your iPhone or iPod Touch without firing up the iTunes Apps store.
Find-and-Replace is an invaluable feature that most text-editors provide. Unfortunately while using Firefox for editing tasks, there is no such native alternative.
Lyrster is a Google CSE based lyrics search engine which searches 350+ lyrics sites to help you locate any song by simply typing in just a few words.
The Google SMS search service may be used for finding movie timings, weather, nearest pizza restaurant, currency conversion, train schedules, cricket scores and a host of other things.
If you’ve ever felt the pain of searching Wikipedia for something you did not know how to spell, this one is for you.