[The New Doom]

I must disagree on that...
Yes, id engines are always the best (they got JC after all) and their artists are the best also (just watch the new doom engine presentation).
I am sure Doom 3 (or wherever they call it) will be id's best game to date with exellent gameplay (read the interview with Jim Dose on Dailyradar and you'll see what I mean).
P.S
The new doom engine is gonna rock big time as will Allied Assault (the best use of Q3A engine to date).

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"We've been doing hacks and tricks for years, but now we'll be able to do things we've been wanting to do for a long time," Carmack said. "For instance, every light has its own highlight and every surface casts a shadow, like in the real world. Everything can behave the same now and we can apply effects for every pixel."