'O' Key - Enables and disables the NEI interface. 'U' Key - Shows the recipes that the selected block or item is used in. Using the 'R' Key or Selecting an item in Recipe mode will sort your inventory and show the recipe at the same time.
Note: Default Keyboard Control layout uses the 'R' Key to Sort Inventory (by Inventory Tweaks). 'R' Key - Gives the recipe for the selected block or item. Double-Clicking the Search Bar toggles it to search for items in the player's inventory. Search Bar - Allows for the searching for any items.
