parts of the economy are indeed booming. energy, obviously; defense contractors and anyone else feeding off the banana republican treasury raid as well.
also remember that the boom is in gdp, which means it doesn't matter that the goods are produced in india or china, just so long as an american realizes the profit. so, offshoring helps gdp by enabling american owners to produce more. it hurts gNp, but we don't hear much about that these days.
another interesting effect is that gdp is essentially adjusted for inflation (technically called the gdp deflator). fine in theory, but lately the government has been fiddling about with the inflation statistics. in particular, if a good cost $100 last year and $108 this year, the old formula called that 8% inflation. in the new formula, however, they can adjust this is this year's good is "superior" in some way to last year's model. so they might say that $6 of the $8 price increase was due to improvements in the product. the classic example is car air bags. one year, they didn't have them, then next year they did. so some of the price increase was due to getting a car with air bags instead of a car without air bags.
this approach is not only obviously subject to manipulation (vendors ALWAYS say their product is better than it was last year), but even in theory it is problematic. for instance, if i can still buy a new car without air bags, but choose to buy one with, well, then the adjustment makes some sense. but because buying a new car without air bags is not an option, my cost for transportation has gone up even if i don't care about the aig bags.
there are other ways they are manipulating the economic statistics. check out
http://www.gillespieresearch.com/cgi-bin/bgn/ if you want to do more digging.