TweetGrid is a must have! TweetGrid is a powerful Twitter Search Dashboard that allows you to
search for up to 9 different topics, events, conversations, hashtags,
phrases, people, groups, etc in real-time.
As new tweets are created, they automatically update in the grid. On of my favorite functions is the Tweet Party. TweetGrid is a fantastic way to take advantage of one of Twitter's strengths, and one of the reasons I encourage you to use it, real-time searching.
Another great find is the open widget page at http://tweetgrid.com/widget/examples.php This page shows you how to create a simple, elegant, highly-flexible, drop-in twitter search widget.