I'm much the same - normally a historic aircraft/tank/ship modeller but after building a couple of Star Wars kits (Sith Infiltrator and Y-Wing) I'm now hooked on this subject as well!
As well as kits I've also bought some of the large-scale toy ships to rebuild and repaint. I recently completed the X-Wing and am currently working on the Jedi Starfighter from Episode 2
I've also got a Star Destroyer (actually in an Airfix box, but it's the same mould as the Revell/AMT one) and intend to build it fairly soon! Unfortunately it's not the fibre-optic lighting version.
I'm glad I bought most of my ships a few months ago rather than now, though - prices of both kits and toys seem to have gone up hugely lately , with the Episode 3 mania!
I got my Star Destroyer on eBay for £10 inc P&P but I see them going for £20-30 now.
On the plus side, the new Episode 3 kits are very good detail-wise and are relatively cheap.