Vout of an op-amp ever exceed gain?

 I answered this SE EE question yesterday.

Yes, Vout value can exceed the rail voltage in the case of an AC amplifier with decoupling capacitors.

These capacitors are charged through the galvanic load to some bias DC voltage (usually, Vcc/2) that is subtracted/added depending on where the load is connected:

• If the load is grounded, the bias voltage is subtracted from the output voltage and the latter can be below ground.
• If the load is connected to Vcc, the bias voltage is added to the output voltage and the latter can be above Vcc.