Sometimes I kinda get lost in the great conky rules that I and many people use..

For example look at this crunchbang conky forum.

a few snippets:
${execpi 3600 wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//';}|${addr eth0}
Will give you your esternal and internal IP adress

Or for hellanzb:
${if_running hellanzb}${font terminus:bold:size=11}${color FFFFFF}NZB ${hr 2}${color 888888}
${execi 10 ~/.conky/hellaconky.py -n}
Speed: ${execi 10 ~/.conky/hellaconky.py -r} k/s
Percent Done: ${execi 10 ~/.conky/hellaconky.py -p}%
ETA:${execi 10 ~/.conky/hellaconky.py -e}
Queued: ${execi 10 ~/.conky/hellaconky.py -q}
${endif}

The hellaconly.py looks like this:
#!/usr/bin/python

# writen by Austin Trask
# contact austin@arcintel.com
# visit http://wiki.arcintel.com for more info

import xmlrpclib
import optparse

#change this next line to represent your hellanzb server info
SERVER = 'http://hellanzb:changeme@localhost:8760/'
hellanzbServer = xmlrpclib.ServerProxy(SERVER)

def NZB(option, opt, value, parser):
download = hellanzbServer.status()['currently_downloading']
if( len(download)>0):
print download[0]['nzbName'].encode('ascii', 'ignore')
else:
print 'None'>

def rate(option, opt, value, parser):
rate = int(hellanzbServer.status()['rate'])
print rate

def percentage(option, opt, value, parse):
percent = hellanzbServer.status()['percent_complete']
print percent

def ETA(option, opt, value, parse):
eta = hellanzbServer.status()['eta']
hours = (eta/3600)
minutes = (eta/60)%60
seconds = (eta%60)
time_left = "%02d:%02d:%02d" % (hours, minutes, seconds)
print time_left

parser = optparse.OptionParser()
parser.add_option("-n", "--nzb", action="callback", callback=NZB,
help="output current NZB")
parser.add_option("-r", "--rate", action="callback", callback=rate,
help="output hellanzb rate")
parser.add_option("-p", "--percent", action="callback", callback=percentage,
help="output completion percentage of current NZB")
parser.add_option("-e", "--eta", action="callback", callback=ETA,
help="displays the ETA of the current NZB")

# New function definitions added by ubuntuforums user "kebes"
# to allow for query of the queue:
def NZBNext(option, opt, value, parser):
queued = hellanzbServer.status()['queued']
if( len(queued)>0):
print queued[0]['nzbName'].encode('ascii', 'ignore')
else:
print 'None'

def QueueLength(option, opt, value, parser):
queued = hellanzbServer.status()['queued']
print len(queued)

def ListQueued(option, opt, value, parser):
queued = hellanzbServer.status()['queued']
if( len(queued)>0):
for item in queued:
print item['nzbName'].encode('ascii', 'ignore')
else:
print 'None'

parser.add_option("-N", "--next", action="callback", callback=NZBNext,
help="output next NZB")
parser.add_option("-l", "--length", action="callback", callback=QueueLength,
help="output queue length")
parser.add_option("-q", "--list", action="callback", callback=ListQueued,
help="output all items in queue")

(options, args) = parser.parse_args()