Can I make use of scripting languages like Tcl, Perl, Python, Rexx, etc. within my JSP pages?

Yes, with the Bean Scripting Framework (BSF) Tag Library, JSP page authors can code the application logic within their pages in languages other than Java. These scripting languages can include Netscape Rhino (Javascript), VBScript, Perl, Tcl, Python, NetRexx and Rexx.

For more information on BSF, see http://alphaworks.ibm.com/tech/bsf.