Six degrees of Separation (SM): DT, Liquid Tension Experiment, Ayreon (James Labrie is main chr on latest CD), Frameshift, Mullmuzler, The Jelly Jam, Platypus, Planet X, Derek Sherinian (solo projects), John Arch (EP) and probably a few others I am forgetting.
My Current favorite 10 bands (as of this week): Symphony X (of course), Ayreon, Pagan's Mind, Evergrey, Vox Tempus (new band in the vein of Lemur Voice), Superior, Shadow Gallery, Cryptic Vision, Fates Warning (and John Arch EP), and probably Lacuna Coil. Looking forward to the new Zero Hour and Threshold releases...