diff --git a/modules/coffee.go b/modules/coffee.go
index deb2caa..51698e7 100644
--- a/modules/coffee.go
+++ b/modules/coffee.go
@@ -7,16 +7,30 @@
 package modules
 
 import (
+	"fmt"
 	"strings"
+	"sync"
 	"time"
 
 	"code.dnix.de/an/xlog"
 
 	"github.com/sorcix/irc"
+	"github.com/sorcix/irc/ctcp"
+)
+
+type Receivers struct {
+	names   map[string]bool
+	running bool
+	mux     sync.Mutex
+}
+
+var (
+	r Receivers
 )
 
 func init() {
 	MsgHandlers["coffee"] = coffeeHandleMessage
+	r.names = make(map[string]bool)
 	xlog.Info("Coffee module initialized")
 }
 
@@ -25,34 +39,73 @@ func coffeeHandleMessage(m *irc.Message) {
 	if len(tok) < 1 {
 		return
 	}
-	switch tok[0] {
+	switch strings.ToLower(tok[0]) {
 	case "!kaffee":
 		switch len(tok) {
 		case 1:
-			go coffeeMake(nil)
+			go r.addReceivers(nil)
 		default:
-			go coffeeMake(tok[1:])
+			go r.addReceivers(tok[1:])
 		}
 	default:
 	}
 }
 
-func coffeeMake(rec []string) {
-	SayCh <- "*\nsetzt Kaffee auf."
-	time.Sleep(30 * time.Second)
-	SayCh <- "*\nstellt eine frische Kanne Kaffee in den Raum."
-	if rec != nil {
+func (r *Receivers) addReceivers(newNames []string) {
+	r.mux.Lock()
+	if r.running {
+		if newNames != nil {
+			r.addNames(newNames)
+		}
+	} else {
+		if newNames != nil {
+			r.addNames(newNames)
+		}
+		go r.makeCoffee()
+	}
+	r.mux.Unlock()
+}
+
+func (r *Receivers) makeCoffee() {
+	r.mux.Lock()
+	r.running = true
+	r.mux.Unlock()
+	printAction("setzt Kaffee auf.")
+	time.Sleep(time.Second * 30)
+	printAction("stellt eine frische Kanne Kaffee in den Raum.")
+	r.mux.Lock()
+	if len(r.names) != 0 {
 		var users string
-		for i, v := range rec {
-			users += v
-			if i < len(rec)-2 {
+		var count int = 0
+		for i, _ := range r.names {
+			count++
+			users += i
+			if count < len(r.names)-1 {
 				users += ", "
-			} else if i == len(rec)-2 {
+			} else if count == len(r.names)-1 {
 				users += " und "
 			}
 		}
-		SayCh <- "*\ngibt " + users + " einen frischen, richtig schwarzen, richtig leckeren Kaffee."
+		printAction("gibt " + users + " einen frischen, richtig schwarzen, richtig leckeren Kaffee.")
 	}
+	r.mux.Unlock()
 	time.Sleep(10 * time.Second)
 	SayCh <- "*\nProst! (c)"
+
+	r.mux.Lock()
+	r.names = make(map[string]bool)
+	r.running = false
+	r.mux.Unlock()
 }
+
+func (r *Receivers) addNames(newNames []string) {
+	for _, v := range newNames {
+		r.names[v] = true
+	}
+}
+
+func printAction(s string) {
+	msg := ctcp.Encode(ctcp.ACTION, fmt.Sprintf(s))
+	SayCh <- fmt.Sprintf("%s\n%s", "*", msg)
+}
+
diff --git a/modules/twitch.go b/modules/twitch.go
index 0500135..a94bda3 100644
--- a/modules/twitch.go
+++ b/modules/twitch.go
@@ -147,7 +147,7 @@ func twitchHandleMessage(m *irc.Message) {
 	if len(tok) < 1 {
 		return
 	}
-	switch tok[0] {
+	switch strings.ToLower(tok[0]) {
 	case "!twitch":
 		switch len(tok) {
 		case 1:
diff --git a/modules/weather.go b/modules/weather.go
index 76c2ad9..dce2019 100644
--- a/modules/weather.go
+++ b/modules/weather.go
@@ -86,7 +86,7 @@ func weatherHandleMessage(m *irc.Message) {
 	if len(tok) < 1 {
 		return
 	}
-	switch tok[0] {
+	switch strings.ToLower(tok[0]) {
 	case "!weather", "!wetter":
 		switch len(tok) {
 		case 1: