one of my favorite new little features in leopard is quick look. it allows you to find out more about a given file by selecting it then clicking the space bar. the really cool thing is that there are quick look plugins available to extend the ‘usefulness’ of quick look.
here are some of the ones i use
Folder Quick Look Plugin
this plugin gives you the ability to look inside a folder without actually going inside. it creates a nice list view.
BetterZip Quick Look Plugin
this is a really useful plugin as it allows you to look inside the contents of various compressed archive types (ZIP, TAR, GZip, BZip2, ARJ, LZH, ISO, CHM, CAB, CPIO, RAR, 7-Zip, DEB, RPM, StuffItâ€™s SIT, DiskDoubler, BinHex, and MacBinary)
flv Quick Look Plugin
allows you to view flv (flash video files) using quick look.
allows you to look inside an apple installer file prior to launching the installer.
allows you to view chm files.
allows you to view Illustrator, InDesign, EPS and Freehand documents without launching an application.
apple script quick look plugin
allows you to preview apple script files using quick look.