People

Gavin Andresen- (Profile) Satoshi client maintainer. He previously worked at Silicon Graphics and now runs his own company.

Mark Karpeles aka MagicalTux- Owner of the largest bitcoin exchange, MtGox, this Bitcoin Wiki, and Kalyhost

Jeff Garzik- (Wikipedia Entry) Satoshi client core developer, Linux kernel developmer at Red Hat, and the founder of Bitcoin Watch.

Pieter Wuille aka sipa- Satoshi client developer and maintainer of the network graphs http://bitcoin.sipa.be

Stefan Thomas aka justmoon- creator of the WeUseCoins.com site/video and WebCoin.

Matt Corallo aka BlueMatt- Satoshi client developer.

Michael Marquardt aka theymos- creator of the widely used blockexplorer.com site, and BitcoinTalk Forum

Amir Taaki aka genjix- creator of the Britcoin exchange, and Spesmilo core developer

Mike Hearn (Profile)- Google engineer who works on Gmail and developed BitCoinJ (http://code.google.com/p/bitcoinj/)

Luke Dashjr aka Luke-Jr- Eligius owner/admin and Spesmilo core developer

Vladimir Marchenko- Profile, runs Marchenko Ltd which sells mining contracts, previously developed the figator.org search engine.

Hal Finney- one of the creators of PGP and one of the earliest contributors to the bitcoin project.

Michael Hendrix aka mndrix- creator of the now defunct CoinPal and CoinCard services