Hey PoJo. PikaPika here. Here's my top ten lists (not including trainers):
 
Base Set
 
1. Electabuzz (40 for two, paralyze, good HP)
2. Hitmonchan (20 for one, 40 for three, good HP)
3. Chansey (120 HP, Alakazam + Chansey + Pokemon Center = Awesome!)
4. Blastoise (100 HP, Rain Dance, 60 for 5)
5. Venusaur (100 HP, 60 for 4, Energy Trans)
6. Alakazam (80 HP, Damage Swap, Kadabra)
7. Ninetales (160 in 2 turns, 80 HP, free Gust)
8. Poliwrath (better than Dragonair, 90 HP)
9. Gyarados (100 HP, 50 for 3, 40 w/ Paralyze)
10. Nidoking (kills Mr. Mime, 90 HP)
 
Jungle
 
1. Scyther (70 HP, Resistance, Colorless attack, possible 60 for 3, free retreat, INCREDIBLE!)
2. Clefable (70 HP, any attack for one colorless)
3. Mr. Mime (Invisible Wall, Meditate)
4. Wigglytuff (possible 60 for 3, 80 HP)
5. Kangaskhan (possible 80 for 4, 90 HP, free 1/2 Bill)
6. Pinsir (60 HP, 50 for 4, Paralyze)
7. Venomoth (Shift, Confusion & Poison!)
8. Nidoqueen (90 HP, possible 100 for 2, 50 for 4)
9. Snorlax (90 HP, Paralyze, Thick Skinned)
10. Pidgeot (Hurricane, 80 HP)
 
Fossil
 
1. Gengar (80 HP, Curse works with Dark Mind)
2. Muk (Toxic Gas, Poison, 70 HP)
3. Ditto (copies anything, works in any deck with energy)
4. Aerodactyl (add Mew and kill Breedered Blastoises, Colorless attack)
5. Articuno (no weakness, Paralyze, bench killer)
6. Hitmonlee (50 for 3, bench killer)
7. Kabutops (40 for 4 minus 20 on Kabutops, 30 for 2, low retreat)
8. Lapras (great starter, Confusion, 80 HP)
9. Raichu (90 HP, ultimate bench killer)
10. Hypno (just like Gengar, free Pokédex minus two)
 
Any Promos that I know of that don't repeat cards (US & Japan)
 
1. Movie Mewtwo (SER can't hurt it, combine with Fuji to replenish deck, 40 for 3, 70 HP)
2. League Mew (see Aerodactyl, Psywave OK, Devo Beam kills or heals)
3. League Arcanine (possible 100 for 2 w/ discard, combine with Alakazam)
4. ANA Pikachu (Paralyze, no weakness, Agility-type attack)
5. Surfing Pikachu (30 for 2 water!, 50 HP)
6. Lily Pad Mew (no hurt from evolutions, Psyshock, 40 HP)
7. Promo Oodairu (possible of over 120 damage, saves Water energy cards)
8. Movie Dragonite (possible 60 for 3, no weakness, 90 HP, Special Delivery)
9. Movie Pikachu (50 for 2 with discard, Energy Search, can kill Blastoise)
10. Rainbow Island Mew (incredible with the right energy, no retreat)
 
-- PikaPika
http://homes.acmecity.com/games/stargazer/360/index.html
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