Rogue Prestige Class

[MisterVimes]

I intend to use a Rogue in an upcoming campaign, and I'm searching for prestige classes. I want something beyond Sneak Attack progression, and am looking for a PrC that is unique and fun rather than extremely powerful.
Any help and/or advise is appreciated.
Books available are Core plus Complete series, but no Complete Scoundrel.
Thanks

[Mr.Bookworm]

What kind of flavor are you looking for?

[Icewalker]

Well there is Shadowdancer and Assassin straight from the DMG.

Then there are a lot available in Complete Adventurer:

Dread Pirate
Nightsong Enforcer
Nightsong Infiltrator
Shadowbane Inquisitor
Shadowmind
Spymaster
Streedfighter
Thief-Acrobat

[MisterVimes]

I'd prefer something sneaky, but I'm open to almost anything. Preferably no casting: I want to stay strictly non-magical. I haven't entirely finished creating the character concept, and want to keep my options open.

[UserClone]

Perhaps the Master of Masks is for you - a class which is far from overpowering, but is dripping with flavor. I personally find it a compelling choice.

Edit: Weird...it increases spellcasting, but doesn't have any casting requirements of any kind...

Edit2: Actually, the Thief-Acrobat sounds like more your style. I still like the MoM, though.

[TimeWizard]

Exemplar is a good class if you want the phrase "skill monkey" to evolve into "Lesser Deity of Skill Checks".

[Mr.Bookworm]

As Icewalker pointed out, there's a ton of stuff in the Complete Adventurer. Browse through all of the PrCs in there.

I particularly like Dungeon Delver.

You really would like the Master of Masks, though.

It's fun.

[MisterVimes]

Master of Masks looks perfect. It's almost exactly what I was looking for.
Thanks for the help.