Like many others, I did end up checking out both LTE and TA because of Mike (and DT), and because of Transatlantic-
...I got hooked onto TFK (which branched out from Roine Stolt into The Tangent, Kaipa, Agents Of Mercy, and pretty much anything he's been a part of since 2000, and many other side-projects from other TFK members like Karmakanic and Tomas Bodin's solo stuff)
...Marillion (and also Kino, Edison's Children, and a couple other side-projects), and because of Kino, I got hooked onto Frost*
...and Spock's Beard (and all their members' solo albums and output, including Alan Morse, Ryo Okumoto, Nick D'Virgilio, and of course, everything Neal Morse has ever put out).
Because of LTE, I have checked out more instrumental prog that features Tony Levin, including Bozzio Levin Stevens, as well as Levin Torn White, and the Bruford Levin Upper Extremities.
Also, after OSI's debut, and the guest spot by Steven Wilson, I checked out Porcupine Tree, and have been hooked on to them since 2004, and gotten all the PT and most of the SW solo stuff, and that in turn also got me into Blackfield and No-Man.
-Marc.