Daily Radar has posted an interview with LucasArts' production manager Wayne Cline, talking about their 3D action adventure which is now showing up in stores. Topics discussed are the game's setting and atmosphere, gameplay and combat, and more. Here is a bit about why Harrison Ford does not make an appearance in the game:

DR: How have you produced the game's sound effects? Did you use actors at all?

WC: We do use actors. Unfortunately Harrison Ford won't do computer games, and he's very expensive as well! We're actually using Doug Lee for Indy, who actually provided Indy's voice for Fate of Atlantis, so we do have some consistency across our games at least.

All the other voices are from actors -- we go down to LA and record them in a studio, so it's fully voice acted.