TALLIS  Works great on Snow Leopard (except it doesn't open iCal when I click on a date).

Is a great replacement for iClock that I'd been using before but is outdated.

I especially like the ability to choose the colored icon -along with any color, any font- even though Apple may have chosen to only encourage black and white (or grayscale) icons.   
(Version 1.1r2)

ERIC WOEHLER  Under 10.6.1 some prefs dont work. I can't change the text to a custom colour nor can I change the order of date/time fields. Other prefs seem to work ok. Unsure about reported memory leak - no evidence for me.  
(Version 1.1r2)

RICHARD TAYTOR  MagiCal has significant memory leaks.  
(Version 1.1r2)

YOUNKINT  1.1r2 working perfectly on two 10.5.8 PPC machines.  
(Version 1.1r2)

FLASH1296  Will not launch.

ERROR:

"A Cocoa NSImageCacheException was not handled"  
(Version 1.1r2)

NEAL  The best of its kind. Neat. Thanks.  
(Version 1.1r2)

EDJM  Love having the small day of week and date badge in the menu bar, it looks nice and fits in well with the Apple icons. The drop-down calendar is a big plus. Thanks for updating it for Snow Leopard!!  
(Version 1.1r2)

FOGCITYNATIVE  Wonderful little application; but V 1.1r1 does not function properly under OS X Snow Leopard.

While it doesn't crash, it also doesn't work. The calendar will pop up, the cursor is visible and it will highligght the dates or the "i" info icon used to set preferences.

But actually clicking on anyhting does not work; nothing bad happens, but it just doesn't work. The bug is confirmed here:

http://www.charcoaldesign.co.uk/bugtracker

Please if you use this software, click the link and add your vote.

And now that I don't have it, I appreciate how much I use it, so please also consider making a small donation to the author via PayPal. Once he fixes it, I intend to voluntairly make a donation.  
(Version 1.1r1)

RUSMAIN  Very simple and useful.   
(Version 1.1r1)

ERIC WOEHLER  Discovered a delightful feature that is undocumented - open the preferences for date and edit the selection - so you can include/exclude items as you wish - so eg, my date shows as Tue 01 Apr, without the year and the day name shortened from Tuesday. Edit works in real time so you can see how the edit will look in yr menu bar. I have no reason to believe the time format can be edited similarly to suit yr personal wishes.  
(Version 1.1r1)