Not seeing much activity in this thread. I can't be the only one still consumed by this game though.
If anything, the "glitch" has made me play it almost obsessively. I'm trying to do all kinds of crazy things while I can. And when I'm not building something I'm stashing stuff in chests for later. I just figure it will be patched at any moment and I want to stockpile good materials for when they actually add new features I'll want to play with (like the upcoming pistons).
Anyway, this is what I've been working on the last few days (amongst other things):
Yeah, that's my wool pyramid. I used all 11 (non-black/white/gray) colors in a near rainbow-like arrangement (remembering Roy G. Biv from way back when

). Unfortunately there is no Indigo so I just made due by using multiple shades of green and blue and kind of stretched it out. Of course I had to top the whole thing with glass so it won't catch fire. So that was really like making 2 pyramids at once. (inner wool and outer glass). I have tons and tons of work to do inside. It is so huge that animals are spawning in there right now. It started off being the same size as my cobblestone pyramid (67 x 67). But since I built this one in a valley and started on one of the upper slopes, when I got to the other side it was stuck off the ground quite a bit. So I extended it down to ground level on all sides. So in some places it is more like 80 or so (though parts of it are buried). So it kind of has this buried into the landacape appearance about it which is cool.
Here are some more shots:
D'oh! Looks like I forgot a section of glass at the lower left - unless it just isn't being rendered for some reason. I'll have to check that out tomorrow. It is hard to check from up close so this wide view actually helps. I should take pictures from each side just for that.
And in the rain as viewed from my original mine cart ride:
Later my son was joking with me about making a pyramid out of jack-o-lanterns since I was stashing a bunch in a chest. Then I thought, you know, that's not a bad idea. I might do that next - maybe underwater

.
Oh yeah, and I need to post some pictures of my extravagant new downstairs room (festooned with gold, lapis, and diamond). I forgot to get those tonight.
Also on my to-do list:
1) Fight some more Creepers to get more gunpowder (I only have 1) to make TNT and then dup it. Use that to blow a hole to the bottom of the world (my son did this - looked like fun). I'm just not sure where I'd do it as I kind of like all the "natural" areas

.
2) Find some gold ore and dup that and use it as a
building material. This didn't even occur to me until I saw my son do it. You can put iron and gold ore back down as blocks and build with it. It makes for much more interesting looking stone! Unfortunately you can't do this with diamond and lapis blocks.
3) Finally finish my around-the-world mine cart. It is close to being done but now I want to make it loop back to the wool pyramid and then approach my house from there.
4) Build something underwater (whether the jack-o-lantern pyramid or just a regular structure). My son figured out how to do this effectively and it is kind of cool because you can have water falling through part of your structure without flooding it.
5) Maybe some sort of lava house (using tons more glass).
6) FInish the road to my pyramid and maybe another to my hunting lodge. The roads are nice to orient you quickly to certain places. I use the one between my house and my cobblestone pyramid all the time.
7) Finish duplicating lots of other stuff (buckets, buckets with lava, wood, gold ore, TNT, and finally mine carts and chests (and place those around my track so there is always a close-by point to get a mine cart and ride home). I'm sure there's more I'll think of later.
8) Oh yeah, and search for some clay and if I can find it, make (and then dup) some brick blocks. It is possible to find it - in the 888 seed you can find some for sure. But due to a bug in 1.6 (was in the computer version and carried over to the 360 one) it is only generated along the diagonal of the map (upper left to lower right). And then only given certain conditions. So many worlds may not have any at all and those that do have very little.