I am quite fond of Sanjay Ghemawat's ancient Tk-based X-Windows calendar program, ical, though not exactly amoung the most current titles. I did grab the newest RPM I could find (this one, at hany.sk) patched it slightly, and got it to build for the latest Fedora. So, for any other fools out there who don't wish to move on:

There is also a slightly newer ical here.