This one-liner is really handy for watching logs from a program that produces a new log file on restart.
gci 'C:\Users\IEUser\AppData\Local\Your Program\logs\*.log'| sort LastWriteTime | select -last 1 | Get-Content -Wait
Get-Content -Wait is the PS equivalent of watch(1).
WARNING: This sometimes hangs when left running in the background. At least it does in my VM. Pressing any key will cause it to catch up.