I've found a particularly useful article for newbies to compression, HowStuffWorks's "How File Compression Works."
MPEG-4 Video, a test with QuickTime 6 Preview - here was my first experience with MPEG-4 using QuickTime 6. Check out the results. (Added June 2002)
The Download Pages
Looking for a specific archiver to decompress some old files you found or just want to try out a new utility? Then check out the Download Pages!
The May97 Benchmark
JAR, RAR, and PKZIP... who will win? <big fat grin?> ;)
The July96 Benchmark
See how RAR and PKZIP stand against the rest of the archivers!