The talk provides an overview of various recent results on the topic of blind interference alignment. The main question is -- can signals be aligned with no knowledge of channel coefficients at the transmitter and can this aligned interference be cancelled with no knowledge of channel coefficients at the receivers? Starting from one of the ÒITA open problemsÓ on the degrees of freedom of vector broadcast with channel state uncertainty over a finite set, that was resolved recently, we describe ongoing work on blind interference alignment where channel coefficients may be drawn from a continuum of values.