[Samsung Epic 4G Touch] mjcollum:
Sorry if i wasn't clear. Anything that wasn't installed stock on the phone in the /system/apps folder should be safe to move to an external card. for example...

my system/apps has.

AccountAndSyncSettings.apk

AccuWeatherDaemonService.apk

AlertRecipients.apk

AnalogClock.apk

ApplicationsProvider.apk

AxT9IME.apk

BadgeProvider.apk

BluetoothAvrcp.apk

BluetoothOpp.apk

BluetoothPbap.apk

BluetoothTestMode.apk

BrcmBluetoothServices.apk

Browser.apk

BuddiesNow.apk

CalendarProvider.apk

CallSetting.apk

Camera.apk

CertInstaller.apk

ChocoEUKor.apk

ClockPackage.apk

com.android.vending-1.apk

com.google.android.voicesearch.apk

com.infraware.polarisoffice.apk

com.sec.android.app.voicerecorder.apk

com.vlingo.client.samsung.apk

Contacts.apk

ContactsProvider.apk

CT.apk

DataCreate.apk

DefaultContainerService.apk

DefaultHomeSelector.apk

DeviceManagement.apk

DigitalClock.apk

Divx.apk

Dlna.apk

DM.apk

DownloadProvider.apk

DownloadProviderUi.apk

DrmProvider.apk

DrmUA.apk

DualClock.apk

Email.apk

EmailWidget.apk

Encrypt.apk

FactoryTest.apk

FTC.apk

FTM.apk

FTS.apk

Gallery3D.apk

Gmail.apk

GoogleCalendarSyncAdapter.apk

GoogleContactsSyncAdapter.apk

GoogleFeedback.apk

GooglePartnerSetup.apk

GoogleQuickSearchBox.apk

GoogleServicesFramework.apk

HelvNeueLT.apk

HiddenMenu.apk

HTMLViewer.apk

InputEventApp.apk

install_flash_player.apk

JobManager.apk

Keytracer.apk

Kies.apk

KiesAir.apk

kieswifi.apk

Launcher2.apk

lcdtest.apk

LiveWallpapers.apk

LiveWallpapersPicker.apk

LogsProvider.apk

Maps.apk

MarketUpdater.apk

MediaHub.apk

MediaProvider.apk

MediaUploader.apk

Microbesgl.apk

MinimalHome.apk

Mms.apk

MmsProvisioning.apk

MobilePrint.apk

MobileTrackerEngineTwo.apk

MotionsSettings.apk

MtpApplication.apk

MusicPlayer.apk

MyFiles.apk

NetworkLocation.apk

ODB.apk

PackageInstaller.apk

PanningTryActually.apk

peinr.txt

Personalization.apk

Phone.apk

PhoneCrashNotifier.apk

PhoneErrService.apk

PhoneInfo.apk

Phone_Util.apk

PhotoRetouching.apk

PicoTts.apk

PolarisOffice.apk

PopupuiReceiver.apk

Preconfig.apk

PrefAct.apk

PressReader.apk

Protips.apk

PRUI.apk

QuickView.apk

SamsungAppsUNAService.apk

SamsungWidget_News.apk

SamsungWidget_ProgramMonitor.apk

SamsungWidget_StockClock.apk

SamsungWidget_WeatherClock.apk

ScreenCaptureService.apk

SecDownloadProvider.apk

SecretWallpaper1.apk

SecretWallpaper2.apk

SecurityProvider.apk

SelfTestMode.apk

SerialNumberLabelIndicator.apk

serviceModeApp.apk

Settings.apk

SettingsProvider.apk

SetupWizard.apk

SetWimaxSettings.apk

ShareApp.apk

shutdown.apk

SisoDrmProvider.apk

SlateTest.apk

SmartDeviceManager.apk

SMTEngine.apk

SMTSetup.apk

SnsAccountFb.apk

SnsAccountLi.apk

SnsAccountTw.apk

SnsDisclaimer.apk

SnsImageCache.apk

SnsProvider.apk

SocialHub.apk

SoundPlayer.apk

SpeechRecorder.apk

SprintAndroidExtension.apk

Sprint_Installer.apk

StaticIP.apk

Street.apk

Superuser.apk

Swype.apk

SystemInfo.apk

SystemUI.apk

SystemUI.apk.bak

Talk2.apk

Tasks.apk

TasksProvider.apk

TelephonyProvider.apk

Term.apk

TouchWiz30Launcher.apk

TouchWizCalculator.apk

TouchWizCalendar.apk

TrimApp.apk

TSMParts.apk

TtsService.apk

TwCalendarAppWidget.apk

TwWallpaperChooser.apk

UserDictionaryProvider.apk

Vending.apk

VideoEditor.apk

VideoPlayer.apk

VoiceRecorder.apk

VoiceSearch.apk

VoiceToGo.apk

VpnServices.apk

vtt-sprint.apk

WiBroPath.apk

WimaxConfig.apk

WiMAXLineTest.apk

WiMAXWTM.apk

WiMAX_NETEST.apk

WiMAX_RC.apk

WlanTest.apk

wssyncmlnps.apk

W_Installer.apk

YouTube.apk

everything else is safe to run from anywhere the phone has access to.

(some of these may even be safe to move but I've never tried)

so if it's not in the list its a good bet it will run from anywhere.