Secret Loading Screen 
When you load a map or movie, you will get 3 different loading screens. One of Tamika and Aryss standing back-to-back, one of Cyclops with a Bio-Rifle, and one of... something else. You can get a Xan loading screen. To get it, browse to C:UT2004 (or wherever your UT2K4 folder is) and enter the System folder. Browse down to user.ini and make a backup of it. Then open it with Notepad. Now press Ctrl+F to open the Find prompt. Search for the term &quot;backgrounds&quot;. The first result you get is what you want. Below the word backgrounds will be 4 lines, each with a number at the end. It should like the following: 

[GUI2K4.UT2K4ServerLoading] 
Backgrounds=2k4Menus.Loading.loadingscreen1 
Backgrounds=2k4Menus.Loading.loadingscreen2 
Backgrounds=2k4Menus.Loading.loadingscreen2 
Backgrounds=2k4Menus.Loading.loadingscreen4 

1-2-2-4. Notice a number missing? 3. Change the number at the end so it reads 1-2-3-4. 3 is the secret loading screen, one of Xan Kriegor that looks VERY cool. You can change it around how you want, personally I deleted all the lines but the 3rd loading screen, so I'll always get the Xan one..