The Celtics are fine. Only Chicago and Miami can beat them in the playoffs. Both of these teams have severe limitations that don't necessarily show up in the regular season, but become obvious in the playoffs. Chicago goes through bigger offensive droughts than even the Celtics do, and the Heat have no bigs. The Celtics surely will take advantage of those two shortcomings in the playoffs.
Seriously though, they just need their depth back. They're occasionally going to lose leads this year, but that's NOTHING compared to last year's regular season nightmare! When the playoffs roll around, we'll have our centers, Shaq, JO, and Semih togetha...in addition to Nate/Delonte/Wafer. Marquis is our x variable here...maybe a trade will be had, but I'm willing to bet it may be a halfway pleasant one at the very least...i.e. josh howard, etc.
There is a very good chance the Heat will rock it in Boston tomorrow and steal a game away, but by no means does that mean they have anything upon the Celtics...it'll just be like the Lakers game Thursday. In other words, if those guys DON"T beat the Celtics at this point in the year (with injuries etc...), then they're realllly in trouble!
Don't worry! The C's are golden. They'll run off a big slew of wins after the all star break.