The Perseid meteor shower peaks from about midnight August 12 in the northern hemisphere. One of best of the year. Look towards the northeast. These cannot really be seen in the Southern Hemisphere though some will pop up above the northern horizon.
Eclipses are visible, generally, only in certain locations. Meteor showers, however, affect the entire planet, and are generally a day or two long. The Perseid meteor shower is happening now, and will continue for a day or two more.
Perseids, associated with debris from comet Swift-Tuttle, peaking sometime on August 12 but likely visible a night before and a night after.
The next lunar eclipse will be on December 21, 2010, and will be visible from anywhere in North America - weather permitting!
Tonight
The website for Sky & Telescope magazine (one of the premier magazines for amateur astronomers) indicates that the Lyrid meteor shower on April 22 is the next one due. However, bright moonlight may interfere with good seeing that night.
the next total eclipse and meteor shower is December 21,3010
We have them every November.
You'll have the Orionids in October and the Leonids in November. See the list below for visible meteor showers throughout the year. They are the same every year. Some are better than others though, as indicated on the list.
The Quadrantid meteor shower normally occurs between January 2 and January 4. You can get advance notice of upcoming meteor showers at spaceweather.com.
October 21st
8/13/11
April 21/22 2008