They should
All the ADC connector is a DVI + Power + Firewire?
However, I was under the impression that the "new" panels didn't use ADC, but had a single cord that split at the end into the three componets.
Side Note:
However, as many will point out, the Apple screens are usually not better than their almost identical competition.
For example, the Apple 20" Widescreen and Dell 2005FW use the same IPS panel which results in very similar color/response time/contrast properties. Dell has included different backlighting and different connections. The Dell 2005FW has both DVI, VGA, and S-Video inputs while the Apple only has DVI. The Dell also comes with a host of special features. Anandtech did a direct comparison of these two monitors...
The Apple 23" Widescreen and the HP L2335 use the same IPS panel. Again similar color/response time/contrast properties. Again, the HP has a better stand, more OSD features, and more connections (DVI, VGA, Componet)