Got late confirmation from Atari designer Steve Baker that he'll be present at the show!

Developed DEFENDER for the Atari 5200/800/400 & STARGATE 5200
that was never released. STARGATE used a unique time sharing
code that allowed dozens of vertical crossing objects in single
line, full-color HIRES mode. Co-developed WINTER & SUMMER GAMES
for the Atari 2600. Designed the SOUND ENGINE and co-developed
CALIFORNIA GAMES for the Atari 2600. Designed a 3 VOICE plus
RHYTHM sound driver for the single-bit Apple-II computer systems.
Developed many Educational titles for DC HEATH and DECISION
DEVELOPMENT. Currently developing a score of original games at
his website, SABGAMES.COM using Java.

You can read our interview with Mr. Baker here:
http://www.digitpress.com/archives/arc00123.htm