More of a "what did you build the past month or so", but i've enjoyed some great builds here at the end of summer / beginning of fall.
I'm late to the Modular game, but after building the PR awhile back I caught the bug and really enjoyed the Pet Shop build. I agree with a statement someone made somewhere on the forums - everyone should have one of these.
I missed out on the snow speeder when it was sold at retail but managed to snag a used one off of eBay for about $25 after I sold off the rest of the lot. So much nostalgia with it! I know this isn't anything new, but this was my first Hoth set - I was so close to rushing out to buy an AOH except for the obvious: no AT-AT available at non Brickpicker prices. Such a missed opportunity for LEGO...
That said, the IST brought redemption... Wow, awesome! Love it! I bought it off Amazon early this year back when I thought 17% off was a "good deal" (thanks BP community for setting me straight on that one), and even though I'd have loved it for cheaper, it was still well with the money. Lots of great thoughts on this board about the future of LEGO (and of course investing), but these three builds have reminded me of how much I love building with LEGO.