I've published on NXTasy.org two new NXT-G blocks.
The first communicates via I2C with mindsensors.com PSP-Nx PS2 controller. Using it one can built a remote controlled car using 3 NXT-G blocks. It can be downloaded here:
The second is a wrapper block to create/read/write from I32 arrays. It uses binary strings to pass data as NXT-G does not support arrays in diagrams. It can be downloaded here: