  We consider the angular power spectrum in a finite universe with different
boundary conditions and perform a fit to the CMB, LSS and supernova data. A
finite universe could be the consequence of a holographic constraint, giving
rise to an effective IR cutoff at the future event horizon. In such a model
there is a cosmic duality relating the dark energy equation of state and the
power spectrum, which shows a suppression and oscillatory behaviour that is
found to describe the low l features extremely well. However, much of the
discussion here will also apply if we actually live inside an expanding bubble
that describes our universe. The best fit to the CMB and LSS data turns out to
be better than in the standard Lambda-CDM model, but when combined with the
supernova data, the holographic model becomes disfavored. We speculate on the
possible implications.
