Here's a tip if you like using the Mac OS X Stickies app. Open the Terminal, type cal and hit return. This will display a text calendar like this:
June 2004
S M Tu W Th F S
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30
Copy and paste that text into a blank Sticky, then change the text to a fixed-width font such as Monaco or Courier, and make any other color or size adjustments as you'd prefer. You'll wind up with something like this.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040608161619686