Cassini will arrive at Saturn and do its main engine burn 7/01/2004 at 0112 Universal Time. During the burn Cassini will have its closest approach: only 0.3 Saturn radii -- about 11,000 miles -- from the cloudtops. Yes Cassini actually will pass THROUGH the rings as it begins its orbital insertion.
By the way the Huygens probe which will land on Titan will not be released from the Cassini craft until 12/25/2004 (yep a bunch of NASA people will be busy on Christmas Day).
I now have a new background picture on my PC. Thank you Nasa, Cassini and Petuniasevan.