  The recent progress in the study of finite-size scaling (FSS) properties of
the Ising model is briefly reviewed. We calculate the universal FSS functions
for the Binder parameter $g$ and the magnetization distribution function $p(m)$
for the Ising model on $L_1 \times L_2$ two-dimensional lattices with tilted
boundary conditions. We show that the FSS functions are universal for fixed
sets of the aspect ratio $L_1/L_2$ and the tilt parameter. We also study the
percolating properties of the Ising model, giving attention to the effects of
the aspect ratio of finite systems. We elucidate the origin of the complex
structure of $p(m)$ for the system with large aspect ratio by the
multiple-percolating-cluster argument.
