Battle Moveset

The best Movesets for Snorlax would have to be this:

Attacks:

Return
Curse
Shadow Ball
Counter

Items Attached:

LeftOvers

Preferred Nature:

Adament

Strategy Using Snorlax

Well, This set was theorized by a guy named SSM, SandSlashMan, he is totally an awesome shrew. Anyway, he calls this set the "Slamma Jamma." With it, you can handle a wife variety of pokemon with relative ease. By putting as much as possible into HP you can make it one of the best tanks i the game. Sure, it will have tons of damage against it, but with 500+ HP, not many viable physical attacsk can KO it, thus counters owns the enemies and makes snorlax look like a genius. Curse is back from G/S/C to have some more sweeping fun. With the max special defense, and curse boosting defense and attack, it will become a very formidable attacker. Shadow Ball and Return add a lot of variety to the set because they can take out most anything that counter cannot.

EV Corner:

Well, you should split things here 2 ways...HP & Special Defense

Strategy Against Snorlax

Snorlax while strong, has rubbish Speed and Defense...so if you get a fast, physically strong Pokémon with decent defense you should have very few troubles

Alternative Set by Shadow Blacky

Rest
Rock Slide
Shadow Ball
Belly Drum

Items Attached:

Chesto Berry

Preferred Nature:

Adament

Strategy Using Snorlax

Snorlax is quite a tough cookie...its strong and has high special defenses so if you do things this way, it should work. Belly drum will be used first to max out attack it's attack Stat. Use Rest whenever Snorlax gets in the Red and the Chesto Berry should wake it up immediately. Rock Slide and Shadow Ball are basically just to Sweep Opponents Contest Moveset

The best Moveset for Snorlax would have to be this for the Cute Contest best with Timid, Hasty, Jolly or Naive Nature:

Attacks:

Yawn
Rest
Snore
Sleep Talk

Items Attached:

Pink Scarf

Strategy Using Snorlax

If you do the attacks in this following order you should have very few problems; 1st - Yawn, 2nd - Rest, 3rd - Snore, 4th - Rest, 5th - Sleep talk

Locations in Games

Ruby/Sapphire Trade From FR/LG Colosseum Trade From FR/LG Fire Red/Leaf Green Only 2, Awaken with Pokéflute on Route 12 and Cycling Road

Animé Appearences

Snorlax has had many Animé Appearences. First, it was blocking a town's Water Supply whilst asleep. After that it was in Oak's lab and helped stop TR from invading. After that it was swimming from Island to Island eating Grapefruit where it was then captured by Ash. After that, it was living on a tree and helped stop the nests of Exeggcute from flying away. After that (and in many subsequent eps) it is in Millennium town and keeps flattening a Houndour who is always mad at the Pichu Bros Episode 041: Wake Up Snorlax Episode 067: Showdown at the Poké-corral Episode 096: Snack Attack Episode 100: A Way Off Day Off Short 2: Pikachu's Rescue Adventure Episode 106: Bound For Trouble Movie 2: The Power Of One Episode 109: Pokémon Food Fight Episode 113: Hello Pumello Episode 136: Charizard's Burning Ambition Episode 147: A Farfetch'd Tale Short 3: Pikachu & Pichu Episode 162: Air Time Episode 169: A Hot Water Battle Winter 6: White Story Winter 7: Balloon Strife Episode 196: The Ring Masters Episode 226: Nerves Of Steelix Episode 248: Wishing Upon A StarShape Episode 256: Better Eight Than Never Episode 257: Why? Wynaut! Episode 269: Claim To Flame Episode 272: Can't Beat The Heat Episode 273: Playing With Fire Special 7: Epic Battle At Oak's Lab Special 9: Meowth's Part Time Job Special 11: Is Niece Azurill in Great Trouble Special 15: Pallet Town! The Setting Off of the Pokémon Trainer Channel: Pichu Bros. In Party Panic