Ever since Sarah Hughes left (one of my all-time favorites, along with Sonja Henie, Oksana Baiul, Elvis Stojko, and Evgeni Plushenko), I've really not had anyone to get that enthused about, be it an American or not. But I have to be honest, all the new changes in the system after the 2006 Olympics also caused a loss of interest, yet I somehow managed to watch US Nationals every year.
And I'm glad when the Americans do well, like the women did at 2008 US Nationals (one of my all-time favorite Nationals ever btw), as well as the men this past year, etc. But no one has yet captured my heart like Sarah, Sonja, Oksana, Elvis, and Evgeni have. With them, I was there from the very beginning, love at first sight as regards their skating. But since then, there have been lots & lots of skaters that I am a fan of, some moreso than others, but no one really stands out for me except Mao Asada. But even my fandom of Mao Asada hasn't made me watch the GPs, et al, every year since the 2006 Olympics.
I'm hoping my renewed interest in skating this past year with the advent of Zhenya's return also translates to watching skating that transports me to Sarah/Sonja/Oksana/Elvis/Evgeni heights, no matter whence it comes from, American or not.
That said, as far as Americans go, I'm looking forward to seeing Jeremy Abbott (his "Beatles" program this past year *did* send me into raptures!), Adam Rippon (shades of John Curry), Ashley Wagner (lovely, lovely, lovely), Rachael Flatt (hard worker with charm), Caroline Zhang (her presentation is exquisite), and Mirai Nagasu (if fully healed from her stress fracture, I predict her to win Worlds). And I'm also interested to see if any newcomer captures my attention, be it jumps or presentation, or in an ideal situation both.
I have to be honest though and say I am disappointed that no American female has appeared that can do a 3A (shades of Tonya Harding's rousing skating from the old days). We used to be such a force in women's skating, always blazing the path for everyone else to follow (both technical & presentation), and now for the first time in history not one American female medalled at this past Olympics. I'm hoping we catch up with the rest of the world, especially when it comes to the technical aspect. I do have "hope".

^)