This is what Minecraft does when I launch it:
1) Displays log in screen. I can log in.
2) Proceeds through the 'setting up Minecraft Forge' form, and appears to complete all steps without a problem.
3) Displays a black screen.
4) Displays the Mojang logo.
5) Displays another black screen, which appears to last indefinitely.
These are the steps I am using to install (using the recommended version and the 7Zip utility to extract files):
1) Downloaded the file from here: http://www.minecraftforge.net/forum/index.php/topic,5.0.html Direct Universal Recommended.
2) Opened both that file and the minecraft.jar in 7Zip.
3) Dragged all the files across from that file into Minecraft.jar and confirmed I Wish to copy them.
4) Deleted META-INF.
5) Closed the Minecraft.jar and ran Minecraft.
The game does not go to any crash screen, however here is Command Prompt output. First, I have the output for launching the game without Minecraft Forge (and exiting normally), followed by the output with Minecraft Forge enabled.
Edit#1: I have not modified the Minecraft /bin/ in any way except installing Minecraft Forge as I stated above. I have attempted this installation 3 times following the instructions above. I have tried installing without removing META-INF as well. Operating system information:
http://i54.photobucket.com/albums/g81/azoundria/osversion_zpsb2aabdfa.gif[/img]
(Do not know why Windows doesn't let me copy this as text.)
Edit#2: Figured it out. I had left some files in the /mods/ folder, from before, which worked with modloader fine and were causing an issue with Minecraft Forge. Upon renaming the /mods/ folder it appears to launch successfully. It would be cool if Minecraft Forge was smart enough to discard outdated mods, or display a relevant error.