I've been meaning to post this for ages, but keep forgetting to. It was number 8, the top 20 are:

1: GnR - Appetite For Destruction
2: Metallica - Master Of Puppets
3: AC/DC - Back In Black
4: Led Zeppelin - Physical Graffiti
5: Black Sabbath - Black Sabbath
6: Iron Maiden - Number Of The Beast
7: Sex Pistols - Never Mind The Bollocks
8: Slippery
9: Slayer - Reign In Blood
10: Nirvana - Nevermind
11: Pantera - A Vulgar Display Of Power
12: Motorhead - No Sleep Til Hammersmith
13: Green Day - American Idiot
14: Ramones - Ramones
15: Metallica - Metallica
16: Led Zeppelin - Led Zeppelin
17: Van Halen - Van Halen
18: Judas Priest - British Steel
19: The Clash - London Calling
20: The Wildhearts - Earth vs. The Wildhearts

LOL, only just realised that there's 4 self titled albums in a row there, odd. Incidentally, New Jersey is listed as the 8th Greeatest Glam Metal album of all time.

If I get a chance, I'll scan and upload the Slippery page