Guitar-
I will go along with the first guy except perhaps swap Knoppfler out for Beck (no disrespect intended for Mark but..Jeff Frickin Beck!..ok?). Honorable mentions (Zappa, Vai the stunt guitarist, Satriani (Vai`s teacher) and Malmsteen (the ego) also love the originality of Gilmore who is sooo under rated!).

Bass-
I would also throw Geezer Butler in for Bass consideration along with Claypool, Deacon, Entwistle..Honorable to Cliff Burton

Drums-
Technically, Peart all the way..but for pounding out a thundering & interesting beat for 30 minutes without a single break-Bonzo (If it moves..smash it..)
For explosive riffs..Keith Moon.

Vocals..Mercury..in a class by himself. Plant is the quintissential Rock God though.

3 Bands I`d like to see

Top Band-for Flat out rockin`

Hendrix
Butler
Bonzo
Plant

Technically Enhanced Droids on roids
Malmsteen
Peart
Mercury
Claypool

Down & Dirty Boogie
John Deacon
Ian Gilliam
Clapton
Moon

My list

Vocals: Bruce Dickinson (maiden)
Guitar: hendrix (no question)
Drums: Dave Lombardo (Slayer), john Bonham.

Did you guys see dittohead ? Thats realy fast drumming...
Just not normal.
And Bruce is just a verry good singer (to bad is have to get older )

BAND OF THE CENTURY
VOCAL 1-BRENT SMITH
VOCAL 2-FREDDIE MERCURY
BASS-FLEA
GUITAR 1- RANDY RHODES
GUITAR 2- ALEXI/OR STEVE VAI
DRUMS- NEIL PEART

Vocalist - Paul Rogers
Guitar - Eric Clapton
Bass - Geddy Lee or Billy Sheehan
Drums - Neil Peart but strangly aways had a soft spot for Phil Collins (drumming only)

There are definitely many greats in each categories. I`m looking at it from a rock `n` roll view.

Vocalists - Freddie Mercury, Robert Plant, Axl Rose, Joe Elliot

Guitarists - Eddie Van Halen, Slash, Jimmy Page, Angus Young, Brian May

Bassists - Flea, Les Claypool, John Deacon, Nikki Sixx

Drummers - Neil Peart, Alex Van Halen, John Bonham

After reading some of the previous entries, I feel that no one should ever slander Neil Peart. what?! needs to shut the f!@# up. Longstreth did have talent. But his type of music sucked. That gothic satanic crap sucked ass. Listen to some classic rock. Even some `80s hair metal would do you some good (people please don`t hate me for that comment). I have seen some pretty good lists. But never hate on someone for liking the best.

Vocalist: David Lee Roth (Van Halen) (Hands down best on stage performer) or maybe Roger Daltry (The Whoe)

Guitarist: Eddie Van Halen (Van Halen), Joe Satriani, Randy Rhodes (Ozzy Osbourne..HOWEVER, Yngwie Malmsteen (Rising Force) plays the fastest guitar I`ve ever seen. No doubt why they call him `The King of Shred`

Bassist: Geddy Lee (Rush), Flead (Chili Peppers), and Mike Dirnt (Green Day)

Drummers: John Bonham (Led Zeppelin), Keith Moon (The Who), Neil Peart (Rush), and Travis Barker (Blink 182)

Now I know Blink 182 fits NOWHERE with those bands..but Travis is an amazing drummer.

Vocals: Freddie Mercury (the best of the best), James Hetfield, Ozzy, Axl Rose

Guitar: Tony Iommy, Slash, Kirk Hammet

Bass: Joey DeMaio (the best of the best)

Drums: Lars Ulrich, Scott Colombus

I`m gonna go out on a limb...I like my music "current", melodic and crunchy, so here you go....

VOCALS: Chris Cornell (Soundgarden, Audioslave)

GUITARS: Jerry Cantrell (AIC) and Andy LaRoque (King Diamond...listen to the "Abigail" or "Them" albums and you will see why...incredible solos)

BASS: Steve Harris (Iron Maiden)...Les Claypool is a good choice as well

DRUMS: Dave Lombardo (Slayer)...the dudes from Tool and Dream Theatre can play too

talk about the ultimate melodic/death/doom/thrash metal band...hehe

BTW... "Lamb of God" kicks ass if you like good home-cooked thrash like me

Later

hey Romain...

Dittohead was played by paul bostaph...he is no slouch either

Very badass song though...one of my Slayer faves

NOTHING TO REEEEEEEEEEEGRET!!!!!!!!!!!!!!!!!!!

vocalist:
1:axle rose
2:ronnie van zant
3:freddie mercury
guitarist:
1:jimi page
2:jimi hendrix
3:slash
bassist:
1:mike dirnt
2:duff mckegan
3:flea
drummer:neil peart

Vocals: freddie mercury
guitar: jimi hendrix, jimmy page
bass: duff mckagan, flea, john paul jones
drums: neil pert, kieth moon, john bonham

singer: Freddie Mercury
Guitar: Page, May
Bass: McCarney, Deacon
Drums: Bohnam

vocals:eddie veddar
gutiar:kirk from metallica hendrix
bass:geddy lee
drumms:dave grohl

veddar
kirk slash hendrix angus young
geddy
dave grohl