$C^*$-algebras associated to two-step nilpotent groups by L. Baggett and J. Packer Some applications of a recent characterization of operator algebras by D. P. Blecher Problems in multivariable operator theory by R. E. Curto The Taylor spectrum of infinite direct sums by R. E. Curto and K. Yan Operator algebras and differential topology by J. Froelich Operator algebras with arbitrary Hochschild cohomology by F. L. Gilfeather and R. R. Smith Representation of symplectic vector spaces obtained as unitary dilations by P. E. T. Jorgensen Imprimitivity systems associated to regions in $\Bbb R^n$, connections between geometry and spectrum, a sample of problems by P. E. T. Jorgensen Triangular algebras--another chapter by R. V. Kadison Decomposability of operators relative to two subspaces by A. Katavolos The equation $Tx=y$ in nest algebras by E. G. Katsoulis Some questions concerning nest algebras by D. R. Larson and D. R. Pitts Some problems on triangular and semi-triangular operators by D. R. Larson and W. E. Wogen Two problems on almost diagonalization of normal operators by R. A. Linden and H. Salas Spatial implementation of lattice isomorphisms by M. McAsey Intrinsic isomorphism invariants for some triangular operator algebras by P. S. Muhly, C. Qiu, and B. Solel Some operator-algebraic aspects of the theory of infinite graphs by W. L. Paschke On analytic subalgebras of UHF algebras by J. R. Peters Five problems on operator algebras by N. C. Phillips Analytic triangular algebras with integer valued cocycle by Y. T. Poon Fourier-Stieltjes algebras of locally compact groupoids by A. Ramsay and M. E. Walter On the preduals of dual algebras and their tensor products by Z.-J. Ruan An introduction to Toeplitz operators associated with analytic crossed products by K.-S. Saito Distance formula and contractive projections by B. Solel Constructions of extreme $n$-positive linear maps by S.-K. Tsui Duality for actions and coactions of measured groupoids on von Neumann algebras by T. Yamanouchi Cyclic cohomology and the index theory of transversely elliptic operators by G. Yu Ideals of generalized Calkin algebras by S. Zhang Problems on $C^*$-algebras of real rank zero and their multiplier algebras by S. Zhang A collection of problems on operator algebras; The Texas groupoid in King Robert's Court by D. Blecher, K. R. Goodearl, R. V. Kadison, K. Merrill, W. L. Paschke, A. L. T. Paterson, F. W. Shultz, and B. Solel.