This talk will address a number of experimental
observations or measurements pertaining to pattern formation in Rayleigh-B\'enard
convection (RBC) which fall into one or both of the following categories:

1.) They seem interesting but have never
been addressed theoretically

2.) They disagree with theoretical predictions.

Included are:

a.) the re-emergence of relatively simple
patterns in cylindrical samples at large Rayleigh numbers

b.) Unorthodox correlation-length scaling
and defect formation in domain chaos, i.e. in RBC with rotation

c.) Formation of "squares" where K\"uppers-Lortz-unstable
rolls are predicted in RBC with rotation

d.) A subcritical bifurcation without hysteresis
in RBC with rotation

e.) Absence of convection above a predicted
Hopf bifurcation in RBC with rotation