I keep having to dredge this info up, so I thought I might as well node it here.
In the 2-disc Special Edition of HP&tSS, you get one DVD with the movie and one disc with extras. There's a lot of fun stuff to explore, but the one thing I wanted was to just go right to the deleted scenes. Yes, Virginia, there are deleted scenes on the second DVD. It is, however, a pain in the butt to get to them. Here's how to get to them:
When the DVD loads in your player, go to the Diagon Alley link. When the game loads (you have to select the right bricks to enter, and it's not the same ones that Hagrid taps), do the following with your remote:
Left, Up, Up, ENTER, Up, ENTER, Up, ENTER, Right, Down, Down, ENTER, Down, ENTER
Once in Diagon Alley, go to the Gringott's sign, then go down and select the key. Then go up and actually go to the goblin bank.
After the voiceover is over, go to the coins on the poster and click ENTER. This gets your money to buy things.
Go to Ollivanders and pick wands until you get the one that doesn't blow things up.
Back out to the main menu and go to the classes.
From the Transfiguration link (don't click it!), go Left, then Up. Hit ENTER on the H on the torch.
You get to see Fluffy. Select the flute.
The key you want is in the middle, and it is small. Highlight and click ENTER.
Select the yellow potion (that was missing in the movie, so it was funny they put it in here.)
Click on the Stone in the mirror.
You'll have three deleted scenes, and go to the right arrow to see the other four. I thought they should all have been in the movie, they were all short. The one where Harry wants to go back to look into the mirror and the one with the extended meeting with Snape and Harry should have definately stayed, as they did add in some important info.
Enjoy!