The best atmosphere at a CL home game in recent memory was last year in the 2nd leg against liverpool, it made no difference to the decisions that went against us, and we still went out. Its also been excellent at many of the bigger games in the last few years.
This years group, with all due respect to the other teams in it, was always going to be a difficult sell (tickets), and difficult to get an atmosphere going, in our only home game so far, the team didn't help by playing shite for 45 minutes, the only time this season we've done that.