The worst hand to be dealt is a 7 and 2 off suit. The best hand to be dealt is a pair of Aces (also known as "pocket" Aces). When the community is dealt, the best hand to use with yours is a Royal Flush, which is a 10, Jack, Queen, King, Ace all suited (such as Spades). The worst is a highcard, such as an Ace or the highest you can use.
Stacked With Daniel Negreanu