My current Gulp build. Check out the quick recipe for using CoffeeScript for your gulpfile here: https://github.com/gulpjs/gulp/blob/master/docs/recipes/using-coffee-script-for-gulpfile.md

gulpfile.coffee

# Load plugins
gulp = require("gulp")
stylus = require("gulp-stylus")
minifycss = require("gulp-minify-css")
coffee = require("gulp-coffee")
uglify = require("gulp-uglify")
imagemin = require("gulp-imagemin")
rename = require("gulp-rename")
clean = require("gulp-clean")
concat = require("gulp-concat")
notify = require("gulp-notify")
cache = require("gulp-cache")
livereload = require("gulp-livereload")
lr = require("tiny-lr")
server = lr()
ftp = require("gulp-ftp")

# Styles
gulp.task "styles", ->
  gulp.src("src/styles/main.styl")
  .pipe(stylus(use: ["nib"])).pipe(gulp.dest("src/styles"))
  .pipe(rename(suffix: ".min"))
  .pipe(minifycss(keepSpecialComments: 1))
  .pipe(livereload(server))
  .pipe(gulp.dest("dist/styles"))
  .pipe notify(message: "Styles task complete")

# CoffeeScript
gulp.task "coffee", ->
  gulp.src("src/scripts/coffee/**/*")
  .pipe(coffee(bare: true))
  .pipe gulp.dest("src/scripts/js")

# JavaScript + CoffeeScript
gulp.task "scripts", ["coffee"], ->
  gulp.src("src/scripts/js/**/*")
  .pipe(concat("app.js"))
  .pipe(rename(suffix: ".min"))
  .pipe(uglify())
  .pipe(livereload(server))
  .pipe(gulp.dest("dist/js"))
  .pipe notify(message: "Scripts task complete")

# Images
gulp.task "images", ->
  gulp.src("src/images/**/*").pipe(cache(imagemin(
    optimizationLevel: 3
    progressive: true
    interlaced: true
  )))
  .pipe(livereload(server))
  .pipe(gulp.dest("dist/images"))
  .pipe notify(message: "Images task complete")

# Clean
gulp.task "clean", ->
  gulp.src([
    "dist/styles"
    "dist/js"
    "dist/images"
  ],
    read: false
  ).pipe clean()

# Default task
gulp.task "default", ["clean"], ->
  gulp.start "styles", "scripts", "images"

# Deploy task
gulp.task "deploy", ->
  gulp.src("dist/**/*").pipe(ftp(
    host: "ftp.yourdomain.com"
    remotePath: "remote/path"
    user: "user"
    pass: "path123"
  )).pipe notify(message: "File deployed")

# Watch
gulp.task "watch", ->
  server.listen 35729, (err) ->
    return console.log(err)  if err
    gulp.watch "src/styles/**/*", ["styles"]
    gulp.watch ["src/scripts/**/*"], ["scripts"]
    gulp.watch "src/images/**/*", ["images"]

gulpfile.js

require('coffee-script/register')
require('./gulpfile.coffee')

package.json

{
  "name": "workflow-2014",
  "version": "0.0.0",
  "description": "Front-end Workflow 2014",
  "main": "gulpfile.js",
  "dependencies": {
    "gulp": "^3.6.2",
    "gulp-coffee": "~1.4.1",
    "coffee-script": "^1.7.1",
    "gulp-cache": "~0.1.1",
    "gulp-clean": "~0.2.4",
    "gulp-concat": "^2.2.0",
    "gulp-imagemin": "~0.1.5",
    "gulp-minify-css": "~0.3.0",
    "gulp-notify": "^1.2.5",
    "gulp-livereload": "^1.3.1",
    "gulp-rename": "^1.2.0",
    "gulp-uglify": "~0.2.1",
    "tiny-lr": "~0.0.5",
    "gulp-watch": "^0.6.2",
    "gulp-stylus": "~0.0.12",
    "gulp-util": "~2.2.14",
    "gulp-ftp": "^0.2.1"
  }
}