I'm keeping an eye on Ryan Shealy as he's out of options, and I don't personally care for Mike Jacobs.
On a similar note, I like Kila Ka'aihue still, even though he didn't do much in the spring (or have many ab's for that matter).
Kelvim Escobar might actually be healthy, he's throwing all of his pitches.
Jason Schmidt missed all of last year, and even though McDonald is getting all of the love, Schmidt has had some super fantasy seasons in the past (though I don't expect him to replicate those).
Russ Branyan may be a full time starting 1B for the Mariners, and though you'll have to swallow a bad batting average and a ton of K's, he can pound the ball and with 500+ AB's should eclipse 30 HR's.
Speculation here, but Nolan Reimold is absolutely pounding the ball in the spring, I don't expect him to make the O's out of ST since it would be senseless to start his arb clock, but if he continues to rake in the high minors this year, he may force their hand (though with Markakis in Jones in place, that leaves 1 spot for him to fight everyone else for).
I definitely like Andy LaRoche as a post hype sleeper, even though he struggled mightily last year, he maintained his BB:K.
Bartolo Colon, I can't believe I'm mentioning him, but given he has been good in the past and he'll probably make the White Sox starting 5, might be worth a look in the deepest of leagues.
Jason Lane? I don't put a lot of faith in him, but if Wells injuries linger, he has mashed in the Spring, perhaps he gets some AB's and chips in a handful of HR's. Real stab in the dark there.
Brandon Wood is a guy I'll be looking at even in some standard leagues. If he is able to maintain a tolerable contact rate, his power is for real. Given Figgins and Kendrick can't stay healthy, the odds are good one goes down, which means 3B is open for Wood, and given that Aybar and Izturis aren't great SS options, it's always possible he starts at SS eventually. Lot of debate on him on this board, but as a flyer, definitely has real power potential.
Jesus Guzman is definitely a good suggestion since he's raked in the winter and the spring and pounded the ball last year in the high minors. Considering the Giants will be looking for offense anywhere they can find it, I suspect he'll see some at bats. Also given I read his most comfortable position is 2B (sorry I don't have it linked, but there is a link on the Giants home page), maybe he gets a look there if everyone falls on there face and the Giants scramble for offense (any thoughts on that Giantsfan?). Just a stab in the dark, as a Giants fan, I wouldn't be opposed to looking there, since their real 2B of the future will likely be opening in AA, might as well mix and mesh.