> In what other programming language can you put spaces in variable names?

PowerShell; although you have to use long form to do it:

    PS C:\> ${var with spaces} = 1

    PS C:\> Get-Variable *space*

    Name                           Value                                                                                                       
    ----                           -----                                                                                                       
    var with spaces                1                                                                                                           



    PS C:\> ${var with spaces} + 2
    3