A lot of attention in the Linux world goes to accessing Windows partitions (NTFS) in Linux. From Hackosis, I’ve recently been pointed to Windows tools that can access Linux partitions. This can be useful if you dual boot and have multiple file systems on the same local disk (or if you mount another disk onto a system, although I’m not sure why anyone would want to mount a Linux disk on a Windows system… I guess backups and even Windows-only forensics tools might be some reasons).
Linux Reader allows read-only access to ext2 and ext3 from a Windows system. Ext2 Installable File System will allow read and write access to ext2 from a Windows system.